by
by way of 经过，经由;通过……的方法
by means of 用，凭借
by chance 偶然，碰巧
by far ……得多;最多
by accident 偶然
by mistake 错误地，无意中(做错了某事)
by and by 不久，迟早
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 all means 尽一切办法，务必
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