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abbr. 日本商务改善协会（Better Business Bureau）；血脑屏障
🗣️ 情景例句
I'm not sure. I'll have to check.
我不能确定，我必须查一下。
What did the doctor say?
医生怎么说？
examined a very large number of men working on aircraft carriers:
调查了许多在航空母舰上工作的人，