Allylurea
烯丙基脲
🗣️ 情景例句
It was a gradual process, involving many factors.
这是个渐进的过程，涉及到方方面面。
Millions of thanks to you all, and don't forget to finish your dinner before it get cold.
十分感谢大家，大家快趁热吃吧。
But a watch could never repair itself----it does not consist of living parts,
但是，手表决不会自行修理，它不是由有生命的部件组成，