Byrtn.比尔特
byprep.靠近;通过;被;经由;不迟于adv.经过;在旁边;靠近
by student- oriented以学生为本
By Christopher Marlowe克里斯托弗?马洛
by the light of natuer本能地, 自然而自然地
by Katherine McCormack作者凯瑟琳?麦考马克
by a happy coincidence巧合; 碰巧; 幸运的
By mistakes in copying异文(如因抄写错误而造成的)
by your might and mainadv.尽全力(全力以赴地)