byat撑木
byprep.靠近;通过;被;经由;不迟于adv.经过;在旁边;靠近
by her might and mainadv.尽全力(全力以赴地)
by the development of根据/通过/由于 ... 的发展
by absolute necessityadv.万不得已(因绝对需要)
by no manner of meansadv.决不(一点也不;在任何情况下都不)
by head and shouldersadv.蛮横地(相当高地)
by air/sea freight通过空/海运
by-pass superheater旁通式过热器