be made of和be made up of区别

be made of和made up of 意思都是：由....制成

be made of 用…造成 (一般可以看出原材料)

如：A boat must be made of buoyant material。 船一定要用有浮力的材料来做。

be made up of 由…组成 ( 是不可看出原材料的,例如纸是用木材制成的)

如：Plato conjectured each of these elements to be made up of a certain Platonic solid.

柏拉图推测每一种元素都是由某些理想立方体组成

标签：made,up,区别