B-b
abbr. 滚珠轴承（ball bearing）；铅笔芯（double black）
🗣️ 情景例句
We'll do it!
我们就来进行吧！
A wise man changes his mind, a fool never will.
智者通权达变，愚者刚愎自用。
He has eight lawyer assistants to help him and examines every single letter in detail.
他有8位律师作他的助手协助工作，每封信都详细批阅。