1、bs:理学学士(英语:bachelor of science,拉32313133353236313431303231363533e78988e69d8331333366303835丁语:baccalaureus scientia,简称b.s.,bs,b.sc.或bsc),或称理学士,大学本科学位,授予修读自然科学相关专业,完成大学本科(**称为大学部)学业的毕业生。2、ba:文学士...
这的区别需要在语境中区别:1. was 1) there was books in the box. 箱子里没有处意为:没有) 2)it was good saying that. 那样说没有好处。(意为:没有)2.was not 1)he wasn't very happy yesterday. 昨天他不太高兴。(此处意为:不是) 2) was not ...