Polydicyclopentadiene
[化] 聚雙環(huán)戊二烯
??? 情景例句
Richard, isn't that too much to ask of your mother?
Richard，那是不是太麻煩你母親啦？
My cousin is a member of a riding club, He seems riding.
我的表兄是一個(gè)騎馬俱樂(lè)部成員，他似乎很喜歡騎馬。
Not too bad.I think I passed in English and Mathematics.
不算太壞，我想我的英語(yǔ)和數(shù)學(xué)及格了。