Adtervac
干血浆制备法
🗣️ 情景例句
whom I think you've met once or twice before.
我想你以前见过他一两次面。
I don't know. You may look in the TV Guide.
我不知道，你可以看看《电视报》。
Why don't I pick you up at your house?
为什么不让我去接你呢？