Ethines
[化] 炔烴
??? 情景例句
Anything to drink?
要喝點什么嗎？
He always called me as my friend.
他總是以“我的朋友”稱呼我。
It was noticed that there were no signs or warnings on the supply lines that ran round the port.
人們這才注意到，鋪設在碼頭周圍的供應管道上沒有貼標簽或告示。