Bb
abbr. 滚珠轴承（ball bearing）；铅笔芯（double black）
🗣️ 情景例句
I was left with nothing.
我一点儿不剩了。
Care killed the cat.
忧虑伤身。
One evening, however, he failed to arrive.
可是，有一天晚上，它出去后再也没回来。