Immunostimulant
免疫刺激剂
🗣️ 情景例句
What's the weather like in Japan this time of year?
现在日本的天气怎么样？
We are accustomed to working hard.
我们习惯于努力工作。
What kind of quality control do you have?
你们用什么办法来控制质量呢？