Immunoselection
免疫选择法
🗣️ 情景例句
If you don't know a person's last name, use 'ma'am' or 'sir'.
如果你不知道一人的姓， 你应称呼他为 'ma'am' 或 'sir' 。
Don't touch it.
不要碰它。
but that you caught the 8.25 which would still get you to work on time.
而是8点25分的，这次车同样能使您按时上班。