Polystyrenes
(polystyrene 的復(fù)數(shù)) n. 聚苯乙烯\\n[化] 聚苯乙烯
??? 情景例句
On a contract.
在一份合同上面。
I suppose it might be gold.
說不定是金子啊。
What is it? asked the man.
“什么事？”樓上人問。