He recorded the class rehearsing before the performance.
他录下了演出前班级的排练。
She was nervous before the performance.
她在表演之前很紧张。
There're still three hours before the performance starts.
离演出开始还有三个小时呢！
The theatre began to fill up just before the performance.
就在演出开始前，剧场满座了。
The band tuned up their instruments before the performance.
比如乐队在演奏前调弦。
The assembly hall was overcrowded long before the performance began.
演出开始前，大会堂里早已挤得水泄不通了。
The public is usually let in half an hour before the performance begins.
通常在演出前半小时放观众入场。
I need to iron my trousers before the performance. They don't look tidy.
在演出之前我需要把我的裤子熨一下，它们看上去不太整洁。
Before the performance, they held the last rehearsal on the rehearsal ground.
演出之前，他们在排练场上进行了最后一次彩排。
The children had fallen seep/gone to sleep before the performance ended/was over .
演出还没有结束，孩子们就睡着了。
Shirley: We came too early. There're still three hours before the performance starts.
雪莉：我们来得太早了。离演出开始还有三个小时呢？
She didn't want a repeat performance of what had happened the night before.
她不想让前一天晚上的事重演。
You do not want to cripple the other executive before you re-evaluate their performance.
你不想在你重新评估管理人员的工作表现之前打击其他人员。
Before moving on to test the implementation, a few words about performance are in order.
在对实现进行测试之前，要对性能做几点说明。
Before each performance, Beth listens to classical music to psych herself up for the concert.
每次音乐会表演之前，贝丝听古典音乐来使自己进入状态。
Queensland itself there were differences in performance, even before the floods, let alone after them.
在昆士兰洲内部他自己的表现就有不同，即使在洪水前，更不用说在他们之后。
I am watching the performance of my child(ren) before I make up my mind.
我正观察我的孩子（们）的表现，来决定谁来接班。
Before the actual performance, the entire cast will have to have a dress rehearsal.
在正式演出之前，全体演员必须先进行一次彩排。
Having tried the product, there was indeed a difference in performance before and after installation.
试产品，确实有一个性能差异之前和之后的安装。
I was to have helped with the performance, but Igot flu the day before.
我是打算帮忙演出的，但前天我感冒了。(没有帮上忙)。
Both teams practiced long and hard to reach their peak performance before the race.
为了取得最好比赛成绩，两队在赛前进行了长期刻苦的训练。
I was to have helped with the performance, but I got flu the day before.
我是打算帮忙演出的，但前天我感冒了。(没有帮上忙)。
Before leaving, the gave us a performance.
离开前，他们为我们进行了表演。
We must master its aerodynamics performance before finalizing the design of inlet system.
设计工作者在设计燃机进气系统产品前必须掌握其气动特性。
We must master its aerodynamics performance before finalizing the design of inlet system.
设计工作者在设计燃机进气系统产品前必须掌握其气动特性。
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