Ethynes
[化] 炔烴
??? 情景例句
Good-bye, Richard, and good luck. See you in two weeks.
再見， Richard， 祝你好運。兩周后見。
Lights glisten.
電燈亮了起來。
I want to go shopping. Can you come with me, please? You can help me carry the things.
我想去商店買東西，你能和我一起去嗎？你可以幫我拿點東西。