Bb
abbr. 滚珠轴承（ball bearing）；铅笔芯（double black）
🗣️ 情景例句
Well, I ...
好啦， 我……
I'm Dennis. I am here to meet you today.
我是丹尼斯，今天我到这里来接你。
The garden was soon littered with chunks of metal which had once made up a lawn mower.
一会儿工夫，割草机便被拆成一个个金属零件，乱七八糟地堆在花园里。