单词：be made of
由...所组成
be made of的用法和样例：
例句
- People used to test coins that were offered in payment, to see if they rang true or were made of false metal.过去人们在收到付款时，常常试扔一下硬币，听听其声音是真的，还是由假金属制作的。
- The fence was made of posts joined together with wire.篱笆是以铁丝连接起木桩而构成的。
- Light often behaves as if it were made of particles.光常常表现出好象它是由粒子组成似的。
- The doors of the palace were made of beaten gold.宫殿的门由金箔做成。
【近义词】
- be made up of由 ... 构成
- be made in在 ... 生产或制造...
- be made from由 ... 制造