Immunoselection
免疫选择法
🗣️ 情景例句
Yes, I am.
是的。
I think you probably know China has adopted a flexible policy in her foreign trade.
我想你也许已经了解到中国在对外贸易中采取了灵活的政策。
Where's Wuhan? Do you know?
你知道武汉在哪吗？