资讯

BBC2 年

Atoms and molecules

Big question. Grit, determination, hardworking, handsome, charming, funny. Teacher: Well, I guess. But you're actually made of atoms. In fact, everything is made of atoms. Presenter: It's funny, ...
BBC20 天

Atoms and molecules

Big question. Grit, determination, hardworking, handsome, charming, funny. Teacher: Well, I guess. But you're actually made of atoms. In fact, everything is made of atoms. Presenter: It's funny, ...