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2_01_germs make me sick【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 5.89MB | |
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2_04_what happens to a hamburger【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 6.08MB | |
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2_06_your skin and mine【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 4.39MB | |
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2_07_almost gone【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 13.76MB | |
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2_08_ant cities【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 5.31MB | |
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2_10_chirping crickets【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 6.15MB | |
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2_12_dolphin talk【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 4.08MB | |
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2_14_How do apples grow【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 76.44MB | |
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2_15_how do birds find their way【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 4.06MB | |
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2_17_look out for turtles【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 5.75MB | |
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2_21_snakes are hunters【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 5.30MB | |
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2_23_what color is camouflage【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 3.76MB | |
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2_25_who lives in an alligator hole【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 4.71MB | |
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2_28_wiggling worms at work【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 5.20MB | |
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2_29_zipping, zapping, zooming bats【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 6.10MB | |
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2_31_Digging up dinosaurs【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 72.44MB | |
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2_33_dinosaur tracks【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 6.37MB | |
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2_34_Dinosaurs are different【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 55.00MB | |
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2_35_Fossils tell of long ago【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 61.99MB | |
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2_36_what happened to the dinosaurs【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 3.45MB | |
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2_37_floating in space【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 83.17MB | |
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2_39_mission to mars【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 7.13MB | |
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2_40_The moon seems to change【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 72.08MB | |
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2_41_The planets in our solar system【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 74.30MB | |
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2_43_the sun our nearest star【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 3.61MB | |
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2_44_what makes day and night【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 3.54MB | |
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2_45_what the moon is like【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 5.43MB | |
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2_46_Down comes the Rain【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 64.67MB | |
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2_48_Flash Crash Rumble and roll【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 69.15MB | |
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2_49_sunshine makes the season【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 74.22MB | |
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2_50_tornado alert【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 4.72MB | |
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2_51_What will the weather be【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 63.58MB | |
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2_52_archaeologists dig for clues【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 12.62MB | |
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2_54_Follow the water from brook to ocean【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 80.49MB | |
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2_55_how mountains are made【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 39.59MB | |
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2_56_Let's Go Rock colletcting【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 70.14MB | |
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2_58_volcanoes【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 6.13MB | |
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2_60_why are the ice caps melting【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 7.93MB | |
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2_61_You're aboard spaceship Earth【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 94.73MB | |
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2_62_day light night light【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 4.09MB | |
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2_63_energy makes things happen【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 5.79MB | |
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2_65_gravity is a mystery【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 5.57MB | |
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2_66_how people learned to fly【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 4.68MB | |
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2_67_switch on switch off【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 4.75MB | |
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2_68_What is the world made of【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 84.50MB | |
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2_69_what maks a magnet【更多课程加微信：582229】.mp3 | 2022-08-28 20:34:35 | 34.68MB |