Alkyoxycarbonyl
[化] 烷酯基
??? 情景例句
Do you happen to know...
你是否碰巧知道…
Indirect communication is often considered as dishonest and tactical.
間接的溝通往往被認為是不誠實和具策略性的。
The airport was built years ago, but for some reason it could not be used then.
機場是許多年前建的，但由于某種原因當時未能啟用。