Immunoprotection
免疫保護法
??? 情景例句
They can keep a record of all of the important dates
他們可以記錄下重要的日子。
It's a nice day today.
今天天氣很好。
After a wonderful meal, they told stories and sang songs by the campfire.
他們美美地吃了一頓飯后，就圍在營火旁講起了故事，唱起了歌。