Paraethoxyacetophenone
对乙氧基苯乙酮
🗣️ 情景例句
No. But I have to.
没有 ，但有此必要。
I suppose he was sick.
我猜他大概是病了。
She wanted him to repair their grandson's bicycle!
她叫他去修理孙子的自行车。