B-b
abbr. 滚珠轴承（ball bearing）；铅笔芯（double black）
🗣️ 情景例句
OK, Robbie, maybe you should watch him. Robbie
也许你得看着他点。
No, the two sides are still in conflict.
没有,双方仍然有矛盾。
I' d like to study medicine and become a doctor.
我想学医，当个医生。