B-b
abbr. 滚珠轴承（ball bearing）；铅笔芯（double black）
🗣️ 情景例句
I have a complaint I would like to make.
我有些怨言。
He was renowned as a portrait painter.
他以肖像画家著名。
I hope no questions about the terms.
我看合同的条款没有什么问题了。