Ethynylation
炔化, 乙炔化作用
🗣️ 情景例句
Aren't you going to admire my new hat?
你难道不想夸夸我的新帽子吗？
I wonder whether he's telling the truth.
我不知道他说的是不是实话。
As she emerged from her drifting cloud of gun smoke with the water churned to foam beneath her bow,
当"瓦萨号从弥漫的礼炮烟云中出现时，船头下浪花四溅，