by
by accident 偶然
by all means 尽一切办法,务必
by and by 不久,迟早
by chance 偶然,碰巧
by far ……得多;最多
by means of 用,凭借
by mistake 错误地,无意中(做错了某事)
by no means 决不,绝没有
by oneself 单独地,独自地
by the way 顺便地,附带说说
by way of 经过,经由;通过……的方法
learn by heart 记住,背诵
little by little 一点一点地,逐渐地
side by side 肩并肩地,一起