Small as they are, atoms are made of still smaller units.

原子虽小，但却由更小的单位组成。

youdao

Small as they are, atoms are made up of still smaller units.

原子尽管很小，但都是由一些更小的单元组成的。

youdao

Small as they are, atoms are made up of still smaller units.

原子尽管很小，但都是由一些更小的单元组成的。

youdao