Allylene
(=methylacetylene)丙炔, 甲基乙炔
🔁 扩展释义
【化】 丙炔
🗣️ 情景例句
I feel rotten about not taking the children out.
我没有带孩子出去觉得很不痛快。
Pain past is pleasure.
过去的痛苦即是快乐。
The children are no longer young, and they know who Father Christmas really is.
孩子们不小了，他们知道真正的“圣诞老人”是谁。