Ethynes
[化] 炔烃
🗣️ 情景例句
Who has torn these pages out of the book?
谁撕掉书上的这几页？
The doctor advised me to take better care of myself.
医生劝我要多照顾自己。
It was not that Bruce always underestimated difficulties.
这并不是说布鲁斯总是低估困难，