Seeing Tom behave impolitely before her guests, she kept her temper and told him to go back to his room.
看见汤姆在她的宾客前无礼的举动，她忍着怒气，告诉他回房去。Inefficient uterine action should be corrected before attributing dystocia to a pelvic problem.
在骨盆问题引起的难产前，无效的宫缩应该加以纠正。Unscrubbed stations are allowed to operate for only a limited number of hours, and must close in any case by 2015.
没有洗涤装置的电站只允许运营有限的几个小时，且必须在2015年前无条件关闭。My colleague Joel Stein let drop a while back that he was working on a book proposal.
我的同事乔尔·斯坦不久前无意中告诉我他正忙着做一个出版计划。Treatment is indicated in women with symptomatic infection and those with asymptomatic infection prior to abortion or hysterectomy.
有明显临床感染症状的患者和流产或子宫切除术前无明显临床感染症状的患者应接受治疗。Sitting in front of the computer quietly, accidently I played the song which has ever enchanted me that year.
静静坐在电脑前，无意间播放了那年那首曾令我心醉神往的歌。You do not need to drop all columns from the full-text index before using the DROP FULLTEXT INDEX command.
使用DROPFULLTEXTINDEX命令前，无需从全文索引中删除所有列。At a more personal level, it is important to know that only a small number of suicides happen without warning.
在较个人层次，重要的是了解只有少数自杀发生前无预兆。Neither prisoners nor experimenters will know who got what until the trial is over.
试验结束前，无论是囚犯还是研究者都不知道囚犯得到的是什么。