beforetimeadv.以前;从前
beforeconj.在 ... 以前pref.在 ... 以前;在..前面adv.以前;以往;之前
before evaluating for yield测定产量之前
Before you empower the team写在你向团队授权之前
before the foundation of PRC建国前
Before friends all is mon.朋友之间应不分彼此.
before the presence of sb.在某人的面前
Before and after impoundment蓄水前后
before one say Jack Robinson转眼之间,说时迟那时快