Prepolycondensate
预缩聚物
🗣️ 情景例句
Give me a chance to think about it,
给我一个机会想一想，
It's hard sailing when there is no wind.
没有风难航行。
I'll keep the things on this shelf for you, said the shopkeeper.
“我先把你的东西放在这个货架上，”售货员说。