B-b
abbr. 滚珠轴承（ball bearing）；铅笔芯（double black）
🗣️ 情景例句
There aren't window seats left, but a few enter seats are open.
那些靠窗的位子已没有了，但里面的位子还有。
The poor man wants much, the miser everything.
贫穷人要求多，守财奴样样要。
If you are citing a train, it is always better to be comfortably early than even a fraction of a minted too late.
如果赶火车，早到总比晚到好，哪怕早到一会儿也好。