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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
