B-b
abbr. 滚珠轴承（ball bearing）；铅笔芯（double black）
🗣️ 情景例句
That's very well.
非常满意！
A thief knows a thief as a wolf knows a wolf.
贼了解贼，正如狼了解狼。
A drink? We've only just started! There are twenty more trees to be planted!
喝水？我们才刚刚开始！还有20多株树要种呢！