Parametrix
拟基本解奇异函数
🗣️ 情景例句
but he has to work today,
但他今天工作忙，
I've realized that we should stop the pollution.
我明白必须阻止公害的原因了。
Then put these clothes in the wardrobe.
然后把这些衣服放进衣橱里去。