英语听力精选进阶版 13915（在线收听） |
Oldest dinosaur footprints found Vocabulary dinosaur large reptile that lived around 200 million years ago mass extinction large number of deaths in a relatively short period of time volcanic eruptions explosions of ash, fire and liquid rock coming out of the earth global warming increased average temperatures across the world stagnation inactivity wiped out completely destroyed devastation destruction gaping very wide ecological connected with plants, animals and the environment void area of empty space |
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