Immunisin
免疫素
🗣️ 情景例句
I'm calling to ask you some questions about Susan.
我打电话是想问一些关于苏珊的事。
How much is it?
这卖多少钱？
You can't buy them in the shop before eight o'clock.
上午八点之前你在商店里是买不到东西的。