Bb
abbr. 滚珠轴承（ball bearing）；铅笔芯（double black）
🗣️ 情景例句
Here you are. You can keep the change.
给你。零钱不用找了。
No. We're supposed to go to the movies.
不，我们决定去看电影了。
Go down this street until you reach the second traffic lights. Turn right.
顺这条街往前走，直到第2个红绿灯处。往右拐。