Cetylenl
[機] 乙炔基
??? 情景例句
and there is room,
這里有地方，
The man thinks he has it made.
這個人想要自己制作它。
We'd like to clear up some points connected with the technical part of the contract.
我們希望搞清楚有關合同中技術方面的幾個問題。