Polyunsaturate
n. [化]多不饱和物(如脂肪等)
🗣️ 情景例句
Your brother left his bag of film on the ferryboat.
你哥哥将他的旅行袋遗放在渡船上了。
It's a pain in the neck.
那真是件麻烦事
This pressure must be under control,
这种压力必须加以控制，