A bird, by singing, may forfeit time that could otherwise be spent on other important behaviors such as foraging or resting.
一只鸟，通过唱歌，可能会失去原本可以花在其他重要行为上的时间，比如觅食或休息。
Test takers with disabilities may request a time extension.
残疾考生可要求延长考试时间。
Some spacecraft may have problems while in space after a certain amount of time.
一些宇宙飞船在太空中停留一段时间后可能会出现问题。
Parents need to remind their children that their needs and desires may change over time, said Julie Gurner, a real estate analyst with FitSmallBusiness.com.
FitSmall Business 网站的房地产分析师朱莉·古纳说，父母需要提醒孩子，他们的需求和愿望可能会随着时间的推移而改变。
You may feel all the training a waste of time, but I'm a hundred percent sure later you'll be grateful for what you did.
你可能觉得所有的训练都是浪费时间，但是我百分之百确定你以后会感激你所做的一切。
That may be a hint that yawn evolved as a social cue—"time for us all to go to bed".
也许这是打哈欠进化为社交线索的一种暗示——“到我们大家睡觉的时间了”。
You may feel all the training a waste of time, but I'm a hundred percent sure later you'll be grateful you did it.
你可能觉得所有的训练都是在浪费时间，但我百分之百地肯定，以后你会庆幸你做过这一切。
To a culture which has come to take instantaneous communication for granted, as part of the very structure of civilized life, this "time barrier" may have a profound psychological impact.
对于一个将即时通讯视为文明生活结构一部分的文化来说，这种“时间障碍”可能会产生深远的心理影响。
In such a life history strategy, the organism suspends any growth, reproduction, or other activities for a period of time so that they may occur at a later, more hospitable time.
在这样的生命史策略中，有机体暂停任何生长、繁殖或其他活动一段时间，以便它们可能在更晚、更适宜生存的时间发生。
The sea may rise or the land may fall; either way the sand dunes will be gone in a short time.
海平面可能会升高，或者陆地可能会下降；不论发生哪种情况，沙丘都将很快消失。
They may only have a limited amount of time to get their points across.
他们可能只有有限的时间来阐述清楚他们的观点。
You may have to work part-time, in a badly paid job.
你也许不得不做兼职，干报酬低的工作。
Winter may be a bad time for thin people.
冬天对瘦的人来说可能不是好时候。
There are a large number of attractions and you may not have time to see them all.
那里有许多景点，你可能没有时间把所有的都参观一遍。
Rebuilding can take a long time, and even then, impressions of the disaster may still remain.
重建可能需要很长时间，即便如此，对灾难的记忆可能仍然存在。
It may also take time to negotiate for the space for a specific outdoor advertising location, to print the posters, or to paint the board.
还可能需要时间来协商一个特定的户外广告位置的空间，打印海报，或油漆公告板。
May I have a minute of your time?
我可以占用你一点时间吗？
The empty shell of a snail or clam may be left behind, and if it is sufficiently durable and resistant to dissolution, it may remain basically unchanged for a long period of time.
蜗牛或蛤蜊的空壳可能会被留下来，如果足够持久和抗溶解，它可能会在很长一段时间内基本保持不变。
They may even have been covered with silk because silk was used a lot at that time.
它们甚至可能是用丝绸覆盖着的，因为丝绸在那个时候被广泛使用。
What Washington does—or doesn't do—to promote alternative energy may mean less and less at a time of a global shift in thought.
在这个全球思维都在转变的时代，华盛顿在推动可替代能源发展方面作为或是不作为，其影响越来越小。
They may focus on a certain country or a certain time period when they begin their collections.
当他们开始收集时，他们可能会关注一个特定的国家或特定的时间段。
One reason women may feel exhausted is that they have a hard time saying "no".
女性可能会觉得疲惫的一个原因就是，她们很难说“不”。
Even though it's common, it's vital to keep in mind that in a single moment of fatigue, you can say something to your child that you may regret for a long time.
尽管这种情况很常见，但有必要牢记，在疲惫的时刻，你可能会对孩子说出一些你会后悔很久的话。
Americans believe in spending their time and energy today so that the fruits of their labor may be enjoyed at a later time.
美国人相信，在当下要付出时间和精力，以后才能享受劳动成果。
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