It was proved by testing the functions of the startup control ark before left factory that the design plan is feasible.
经过对启动控制柜在出厂前进行的各项功能试验，证明该设计方案可行。
I had cleared my desk before I left.
离开前我清理干净了办公桌。
I took the precaution of clearing out my desk before I left.
为了万全起见我离开前清理了我的桌子。
She was careful to reset the alarm before she left the office.
在离开办公室之前，她小心翼翼地重设了警报器。
We left just before the final curtain.
我们刚好在演出结束前离开。
Most of the occupants had left before the fire broke out.
大多数人在火灾发生之前已经离开。
Before she ran away, she left a note explaining her actions.
逃走之前，她留下了张便条为她的行为作了解释。
Two months before she gave birth to Jason she left work feeling on top of the world.
在生下贾森的两个月前，她辞去了工作，感到极其幸福。
The day before they left Jeff had shopped extravagantly for presents for the whole family.
他们离开的前一天杰夫已奢侈地为全家人采购了礼物。
Before I left him, I sang him to sleep.
在我离开他之前，我唱歌哄他入睡。
I wanted to visit the park before I left.
我想在离开前参观一下公园。
I'm writing to show my sincere appreciation for the book you gave it me before you left China.
你在离开中国之前给我送了那本书，谨写此信以表达我衷心的感谢。
It's a story about his family before he left and sort of how he had a very happy, joyful life with his family.
这是一个关于他离开前的家庭的故事，讲述了他是如何和他的家人过着幸福快乐的生活。
He had left Moscow several hours before.
他几小时前就已经离开莫斯科了。
For example, the audience learns through a letter or through someone else's conversation who this mysterious gentleman is and why he left the town many years before.
例如，观众通过一封信或其他人的谈话得知这位神秘的绅士是谁，以及他多年前为什么离开这个城市。
It will take years before the industry digs itself out from the wreckage left by Andrew. some companies will be buried by it.
这个行业要想从安德鲁留下的残局中恢复过来，还需要数年时间。一些（公司）将被它埋葬。
Check the weather before coming ! I was very sure that California was sunny all year around so I left all my jackets and sweaters in Paris.
来之前先看看天气！我非常确定加州全年都是阳光明媚的，所以我把所有的夹克和毛衣都留在了巴黎。
我们是在黎明前出发的。
People are living longer than ever before, so even people who are 65 or 70 have a surprising amount of time left.
人们的寿命比以前都要长，所以即便是65或70岁的人，余下光阴也还长得惊人。
Had they left before you got there?
你到那里时他们已经离开了吗？
I could drive a car before I left school.
我在中学毕业前就会开车了。
I dialled Elizabeth's number thinking I might catch her before she left for work.
我拨了伊丽莎白的电话号码，心想我或许能赶在她动身上班前和她取得联系。
I downloaded the whole thing into the hospital mainframe before I left work today.
我今天下班前把全部内容下载到了医院的主机上。
Look left and right before you cross the road.
左右看一看，然后再过马路。
He had actually left the company a year before the rumpus started.
其实在争吵开始一年前，他就已经离开了这家公司。
Shortly before dusk they reached a fork and took the left-hand track.
快到黄昏时，他们来到一个岔路口，沿着左边的小径走去了。
We left the party in a good mood before midnight, singing and laughing.
我们在午夜前唱唱笑笑、心情愉快地离开了派对。
Everything was placed exactly where it used to be before she left the laboratory.
在她离开实验室之前，她把每件东西都准确地放在它们原来的位置上。
We left the theater around 8, just before the evening shows began.
我们8点左右离开电影院，刚好在晚会开始前。
The young couple, who returned my lost wallet, left before I could ask for their names.
那对年轻夫妇把我丢失的钱包还给了我，我还没来得及问他们的名字，他们就走了。
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