Waterproofer
防水层[布, 材料]
🗣️ 情景例句
It was not until yesterday that I noticed it.
我一直到昨天才注意到它。
We tried in vain to make him change his mind.
我们试图使他改变他的主意，但白费力气。
We can offer a 10% discount for orders over 10000 pieces.
订购一万个以上，我们可以打九折。