Prepolycondensate
预缩聚物
🗣️ 情景例句
What's wrong with wanting to be on the school board?
想进入联合校董会有什么错？
Everything must have a beginning.
凡是都有起源。
but few of us have skeletons in the cupboard.
但我们当中极少有人有柜中骷髅。