Alkanolamide
链烷醇酰胺
🗣️ 情景例句
Don't move! Get down on the floor.
别动！趴到地上！
One should not run with the hare and hunt with the hounds.
不应两面讨好。
How many spiders are engaged in this work no our behalf?
有多少蜘蛛在为我们效力呢？