Immunoprotection
免疫保护法
🗣️ 情景例句
But don't give up.
但是千万不要放弃。
Who will not keep a penny, shall never have many.
不积少，不会成多。
It's nearly ready.We can have dinner at seven o'clock.
马上就好。7点钟我们可以吃饭。