在前: before; beforehand; in front ...的: 4次方是 The fourth power of 2 i ...在前的,以前的: former在前的,先前的: preceding较早的,在前的: prior先前,在前的: previous先行的,在前的: precedent序言,预备,在前的: preliminary在前的,前面的: foregoing在前的,较早的: previous a在前的;居头的: be prior to在先,在前的: antecedent在前的心搏,在先的心搏: preceding beat在前: before; beforehand; in front; ahead; pre-; prae-; ob-前的: anterior; anticus; frontal; precedent; prevenient; previous; prior头在前: with the head first在前,先行: precede在前,先: ante-在前,向前: ah'd ahead在前边: in the front在前部: forwardly; in the front of在前地: ahead在前方: ahead; forth; forwardly在前后: front and rear在前进: en marcha; on marcha