There is a constant shuffling, as potential energy is transformed into kinetic or elastic energy, and then back again.
能量经常在我们身体里转来换去，从势能转为动能或弹性能，然后再转变回来。
He change verb tenses every time he talked about something. He kept shifting from the past to the present and then back again.
当他说到某事的时候，讲的动词时态都不一样，从过去时到现在时，再转回去。
This is necessary because the user may have added items to the Cart and then refreshed the page or navigated away and then back again.
这是必需的，因为用户可能已经向Cart中添加了商品，然后刷新了页面或者导航到其他地方之后又返回来。
Illicit and legitimate production can go on simultaneously; or, on a dime, this dual-use infrastructure can turn from clandestine to commercial and then back again.
非法与合法的生产能同时进行，或者军民两用的化学生产设施可以随时转产。
Bipolar disorder causes dramatic mood swings from overly "high" and/or irritable to sad and hopeless, and then back again, often with periods of normal mood in between.
双相情感障碍导致激烈地在过分地高亢和/或易怒到悲伤与无望之间反复的情感波动，同时，常常有一个平稳的间歇期在两者之间。
The author thinks that this literature experienced a double negative process:from the mountains and rivers in literature to the Literature of Mountain and River, then back again.
认为中国古代的山水文学经过了由文学中的山水到山水文学，再回归于文学中的山水这一否定之否定的过程；
Joe harassed him awhile, and then he got away and crossed back again.
乔捉玩了他一会儿，然后他又逃掉，回到汤姆那边。
From what I remember, water changes back and forth from water in lakes and oceans to vapor, and then back to water again when it falls as rain or snow, as precipitation.
根据我的记忆，水往复地变化，从湖泊和海洋里的水变成水蒸气，然后当它以雨或雪——也就是降水的形式落下时又变成水。
The boy would then fall to the grass, get up, without looking back at his mother, run as fast as he could, again, still with a smile on his face, as if nothing had happened.
然后，小男孩摔倒在草地上，再爬起来，不回头看他的母亲，再一次以最快的速度跑起来。他的脸上仍然挂着微笑，好像什么也没发生过。
We'd have to take the big trucks apart and then put them back together again, slower than a ferry and a lot more expensive.
我们必须把大卡车拆开，然后把它们重新组装起来，比渡轮慢得多也贵得多。
The directory stack enables you to store one or more directories into a temporary area, and then bring them back again.
目录堆栈使您可以将一个或多个目录存储到某个临时区域中，然后再次调回它们。
We can also see that the ratio for D01MLC96 trends down over the next couple of months, then back up again.
我们还可以看到，D01MLC96的比率相比前两个月有下降的趋势，然后再次上升。
I try to bite my tail and am turning round and round like a dog. I draw the storyboards, throw them away, gather them back, rearrange, then throw them away again (laughs).
像狗绕着圈子追咬自己的尾巴一样，我先是画了一些分镜，然后把它们扔掉，又捡起来，重新整理，然后再次扔掉(笑)。
The arm whirs forward, then stops, then goes again, then suddenly pulls back.
手臂向前，然后停止，然后又向前，又突然拉了回来。
The way he was moving was not like a normal person would, it was like a glitching computer; he would "jump" forward, backward or to a side, then back to his normal place again.
他走的样子不像是个正常人，像个短路的电脑似的，他“跳著”向前、退后、或是向侧面走，然后又退回到之前站的位置。
The cicadas went quiet, and then came back in again, louder than ever, hissing like a current through the grass.
蝉声渐渐隐去，忽又嘹亮起来，声势更胜，嘶嘶之声仿佛电流一般穿过草丛。
Then they fly out north for another couple of hours to drop off fuel at a fuel "cache" and then fly back again - and that's all before they can start to head out to us.
然后，他们又往北飞行数小时，去给一个加油站送燃料，随后返回——这些是飞往我们这里之前飞机要做的所有事情。
He hurried home for the straw and then hurried back to the market again.
他急急忙忙回家拿了拿跟稻草，又急急忙忙赶回市上来，一来一去，花了很多时间。
One to live to make mistakes and then one to come back and do it again.
第一次可以犯错，然后再重头来过。
That linearGradient fill has three stops between a subtle gray and a white, then back to the gray again.
linearGradient填充在浅灰到白色之间有三站，然后再过渡到浅灰。
It has been there since December, slowly criss-crossing the 65km between St Croix and St Thomas, periodically surfacing and then diving back down again to depths of 4, 000 metres.
从12月份开始就一直在那里，慢慢的在StCroix和StThomas之间交叉往来65公里，周期性的浮出水面再潜回4000米的深处。
One could save that data dynamically on each page and pass it all as form data, but that poses problems when users backtrack or go to other sites then come back again.
我们可以在将它们全部作为表单数据传送的每个页面上动态保存数据，但当用户顺原路退回或到其它的站点后又回来时会引发问题。
If they truly value what it means to write then they'll be back to publicly sharing their content once again.
如果他们真正珍惜写作的意义，我想他们会回到公众视野里，再次分享他们的内容的。
Don't just sit and stare at it: think hard; until you're exhausted; then come back the next day and try again.
不要只是坐下来盯着问题：仔细想一想；直到你筋疲力尽为止；那么接下来的一天接着想。
Sometimes project teams could be disbanded because they're just waiting for approval, and then it is difficult to put them back again.
有时项目团队因为只能等待批准交付物而被解散，日后让他们重回项目团队非常困难。
Then I came back to the dorm again with a total of 5 times, 45 floors of climbing during the day.I was entirely exhausted to death.
拿昨天来说，在外面办事跑了几趟，后面和破仑去吃饭，再跑回宿舍，一共上下楼5趟，爬了45层楼，累得快动不了了。
Then as you grow your eyes move smoothly down the line like a lawn mower, then you stop a split second on a word, then start back up again.
长大后，当你阅读时你会像割草机一样顺畅地移动眼睛，在某个单词上只有刹那的停留，然后突然再次缩回去。
He unfurls his previously hidden carrot-orange crest and streaks out at her, wings askew, then darts back to hide again.
他打开先前收起的橙黄色羽冠，斜张着翅膀，像一道闪电向雌鸟冲去，然后迅速撤回，把自己藏了起来。
He unfurls his previously hidden carrot-orange crest and streaks out at her, wings askew, then darts back to hide again.
他打开先前收起的橙黄色羽冠，斜张着翅膀，像一道闪电向雌鸟冲去，然后迅速撤回，把自己藏了起来。
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