Billi
n. [计量] 千兆分之一（忽，毫微）\\nn. (Billi)人名；(意)比利
🗣️ 情景例句
Sometimes I lack patience in what I am doing. However, I'm very careful with my work.
我有时候对自己的所作所为缺乏耐心，不过工作很细心。
There must be someone behind the door.
门后必然有人在。
Cave exploration, or pot-holing, as it has come to be known, is a relatively new sport.
洞穴勘查——或洞穴勘探——是一项比较新的体育活动。