Bb
abbr. 滚珠轴承（ball bearing）；铅笔芯（double black）
🗣️ 情景例句
We have both been excited about seeing you
我们两个很高兴见到
I have a lot of trouble with pronunciation.
我有发音的很多毛病。
After reading an article entitled 'Cigarette Smoking and Your Health' I lit a cigarette to calm my nerves.
读完一篇题为《吸烟与健康》的文章之后，我点上了一枝香烟，来镇定一下自己紧张的神经。