beforeconj.在 ... 以前pref.在 ... 以前;在..前面adv.以前;以往;之前
before seconds of在 ... 几秒钟以前
before the lightsadv.在舞台上(登台)
before commission付佣金前
before everything首先
before overwinter冬前
before set of sun日落前
before one's nosevi.出洋相(丢脸;当众出丑)
before and during在 ... 之前和之间
before decades of在 ... 几十年以前
before minutes of在 ... 几分钟以前