Seroresistance
血清不应性, 血清效价不变
🗣️ 情景例句
Let's meet more often.
让我们常见面。
The fox is known by his brush.
狐狸只因尾巴大，所以人人认识他。
Let's take a look at your price list again.
我再看一次你们的价目表吧。