Bb
abbr. 滚珠轴承（ball bearing）；铅笔芯（double black）
🗣️ 情景例句
All set for eating.
吃饭用的一切都准备好了。
If the pills were pleasant, they would not be gilded.
丸药不苦不会加糖衣。
The struggling musician and the struggling artist. What a pair!
艰苦奋斗的音乐家和艰苦奋斗的画家在一起。真是难兄难弟！