Unipolycondensation
单一缩聚作用
🗣️ 情景例句
We cannot leave this problem unattended.
这一问题我们不能置之不理。
The first blow is half the battle.
头炮打响，等于半个胜仗。
Is this the part that you need?
这是不是你所需要的零件？