Allylurea
烯丙基脲
🗣️ 情景例句
I haven't seen you for a long time.
很久没见了。
Time tries truth.
时间考验真理。
I'm tired, said my younger brother as he climbed up to join me.
“我累了，”我弟弟边说边爬上岩石和我汇合。