Polychlorostyrene
聚氯苯乙烯
??? 情景例句
I'm most grateful to you for taking so much trouble to explain the best way of getting there.
你不厭其煩地給我解釋去那里的最佳途徑，我對些深表感激。
How much does shw want?
她要多少？
She doesn't like milk.
她不喜歡喝牛奶。