Cyclopentadiene
環戊二烯
??? 情景例句
We're talking about buying
我們在商量購買
The building of the new road has been held up by bad weather.
這條新馬路的修筑因天氣惡劣而受阻。
Hi, Li Lei! Am I late?
你好，李壘！我遲到了沒有？