One of the more innovative uses was to use it in windows as, up until then, they had just been holes in walls.
其中一个更具创新性的用途是把它用在窗户上，因为在那之前，窗户还只是墙上的洞。
Determining the functions of play is difficult because the functions may be long-term, with beneficial effects not showing up until the animal's adulthood.
定义玩耍的功能是困难的，因为这些功能可能是长期性的，其积极影响要到动物成年后才会显现。
He was so engrossed in his work that he frequently stayed up until the small hours.
他全神贯注地工作，经常工作到下半夜。
He continued working up until his death.
他一直工作到去世。
Right up until the last minute, workers were still putting the finishing touches on the pavilions.
直到最后一刻，工人们还在给那些亭子作最后的修饰。
I've been pretty lucky up until now.
到目前为止我都很幸运。
They didn't show up until three o'clock.
他们直到三点才出现。
He told her not to get up until he returned.
他告诉她在他回来之前不要下床。
When he digs into a problem he does not give up until he gets to the bottom.
他要是钻一个问题，就非钻个水落石出不可。
We planned to meet at 10:30 at the station yesterday, but Bob didn't show up until 11:00.
我们计划昨天10点半在车站见面，但是鲍勃直到11点才出现。
Looking after the patients in the hospital day and night, you never gave up until the sick got well.
你们在医院日夜照顾病人，病人痊愈前，你们从不放弃。
I'm afraid I'll be tied up until 7 o 'clock.; I'm afraid I won't be free until 7 o 'clock.
我七点钟以前恐怕抽不出身来。
Sit down with a pad and pencil and think, and don't get up until you have something!
拿着铅笔和本子坐下来思考，在没有任何想法之前不要站起来！
Your decision, just made, is the toughest decision you've had to make up until now.
你刚才做了一个到目前为止最为艰难的决定。
Meanwhile, up until six months ago, NASA had 15 functional Earth-sensing satellites.
与此同时，直到6个月前，美国航天局有15颗功能地球遥感卫星。
Step two, "put it where people can see it," was really hard up until about 10 years ago.
第二步，“放到人们能看见的地方”，直到大概10年前还绝非易事。
Don't work right up until the moment you leave and head back to work right off the plane.
不要一直工作到休假的前一刻才离开，也不要休假回来刚下飞机就急着回去干活儿。
I didn’t wake up until 4am the next day, and it felt like I was in a deep, dreamless sleep.
结果直到第二天早上4点我才醒过来。感觉这是一次很沉的几乎无梦的睡眠。
Whatever we do, we must establish such a belief: Never give up until we reach our targets.
无论做什么，我们都应该树立这样的信念：不达目的，决不罢休。
Resolve that, no matter what happens, you will never, never give up until you are successful.
记住，不管发生了什么，你都不要，不要放弃，直到成功。
If you do fall out of the boat, your lifejacket will help you to stay up until we can get you out.
如果你真从船上掉下去了，救生衣就可帮助你漂浮在水面上，直到我们把你搭救上来。
If you do fall out of the boat, your lifejacket will help you to stay up until we can get you out.
如果你真从船上掉下去了，救生衣就可帮助你漂浮在水面上，直到我们把你搭救上来。
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