Bbb
abbr. 日本商务改善协会（Better Business Bureau）；血脑屏障
🗣️ 情景例句
He sees her often but doesn't want to get too involved.
他常与她来往，但不愿用情太深。
Doctors and lawyers are professional people.
医生和律师是专业人员。
Things were clear now.
事情现在清楚了。