Planet的精选知识

• 2分钟英语演讲稿范文：Blue Planet

• 2分钟英语演讲稿范文：BluePlanetWeallhaveacommonhome.Sheprovidesuswithenoughfood,enoughwaterandenoughlivingroom.Wegeteverythingfromthenaturetolivebetter,butwedonnotdoanythingtoprotecther.Howtheairispolluted;theearthispoisoned;waterisunsafetodrinkandrubb...
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