Oxamide
草酰胺, 乙二酰二胺
🗣️ 情景例句
(looking at his calendar) Oh, next Friday is May 4th.
（正在看着日历）哦，下周五是五月四号了。
Hedges have eyes, and walls have ears.
篱笆有眼，隔墙有耳。
for it is then almost ready to undertake heavy work and can begin to earn its keep straight away.
这个年龄的象差不多已能干重活，可以很快挣回饲养它的开支。