Bbo
偏硼酸钡（晶体）；助推器烧毁（Booster Burnout）
🗣️ 情景例句
Nowadays many people go traveling for the holidays.
下面许多人都在假期里去度假。
I will go for a walk.
我将去散步。
She works very hard and is very helpful.
她工作非常努力，对同学们帮助很大。