Crotonylene
[化] 巴豆炔; 2-丁炔
🗣️ 情景例句
He says he'll get up at six tomorrow morning, but he'll never make it.
他说他明天早上要6点起床，但他是绝对做不到的。
Do you have any more colors?
有别的颜色吗？
He expected the assistant to look at him in blank astonishment.
他原想女售货员会惊奇地望着他，不知所措，