Bb
abbr. 滚珠轴承（ball bearing）；铅笔芯（double black）
🗣️ 情景例句
What language do they speak in Japan?
在日本他们说什么语言？
Man's best possession is a loving wife.
男人最可贵的是有一个贤淑的妻子。
It may also be said that rational, industrious,useful.
也可以这样说，理智的、勤劳的、有用的。