Immunoprotection
免疫保护法
🗣️ 情景例句
Is everything OK?
一切都好吗？
We are short of hands now.
我们现在人手不足。
The river which forms the eastern boundary of our farm has always played an important part in our lives.
形成我们农场东部边界的一条河流一直在我们生活中发挥着重要作用。