Bbo
偏硼酸钡（晶体）；助推器烧毁（Booster Burnout）
🗣️ 情景例句
Make sure everybody is at that meeting.
要确定每一位都出席这次会议。
I wasn't born yesterday.
我又不是三岁小孩。
Light the fire not so near the entrance that the wind will blow the fire out, and not so far in that the smoke will fill the cave, said my brother.
“不要太靠近洞口点火，风会把火吹灭的；也不要太靠里面，那样烟会充满山洞的，”我弟弟说，