清瘦、训练艰苦的女运动员行经可能不那么频繁或根本没有月经。
Lean, hard-training women athletes may menstruate less frequently or not at all.
生活是艰苦的，但完成任务也并不容易。
艰苦的日子会酿成怨气。
他过着艰苦的生活，“如果他们能做到，为什么我不能？”
He lived a hard life, "If they could do it, why couldn't I?"
对于韩国年轻人来说，这一年中的其他364天是很艰苦的。
The other 364 days of the year are very tough for Korean youngsters.
在一次艰苦的锻炼或一整天体力活动后，肌肉酸痛是很常见的。
After a tough workout or a day full of physical activity, it's common to find your muscles aching.
他们接受相对较低的工资，艰苦的工作环境，并尽了最大的努力。
They accepted relatively low pay, difficult working conditions, and gave their very best.
那是一场漫长而艰苦的战斗，但战斗结束时，我们和船都成了俘虏。
There was a long, hard fight, but when it finished, we and the ship were prisoners.
正是这种财富使他们能够进行这场漫长而艰苦的独立战争，并最终取得胜利。
It's this kind of wealth that allows them to fight this long, hard War of Independence, which they finally win.
这样想来，休闲就是艰苦的劳动，回到工作岗位上就成了一种得来不易的休息。
Leisure, thus conceived, is hard labour, and returning to work becomes a well-earned break from the ordeal.
这是一项艰苦的工作，但当你阅读时，你会发现曾经被视为一种义务的事情现在变成了一种乐趣。
It's hard work, but while you are reading, you'll find that what once seemed like a duty is now a pleasure.
他正进行艰苦的谈判。
为改善那家监狱里的条件已做了艰苦的努力。
Strenuous efforts had been made to improve conditions in the jail.
他们过着艰苦的生活，与敌人作战。
这是一项艰苦的工作，但很值得。
他们决定开始一个漫长而艰苦的征程。
这是一项艰苦的工作，但杰西卡充满耐心、自信和勇敢。
It was hard work, but Jessica was patient, confident and brave.
在我小时候，我们家在乡下过着艰苦的生活。
这是艰苦的工作，但每个人都有这样强烈的满足感。
It is hard work, but everyone has such a strong feeling of satisfaction.
黄说，艰苦的生活几乎把他打败了，但他仍然没有放弃学习。
Huang said that he felt almost defeated by the hard life, but he still didn't give up learning.
“这是一项艰苦的工作，”他说，“但我想更多地学习如何照顾动物。”
"It's hard work," he says, "but I want to learn more about how to look after animals."
在接下来的八年里，成为一名全职的成功演员仍然是一场艰苦的战斗，直到他获得了一些电影角色，最终让他得到了关注。
Becoming a full-time, successful actor would still be an uphill battle for another eight years until he landed a number of film roles that finally got him noticed.
迈克开始艰苦的训练以后，他变成了一个体格强健的人。
他们生活在不稳定的平衡中，并且这是地球上最艰苦的环境之一。
They live in precarious balance and one of the toughest environments on earth.
2008年北京的一个夏夜，所有那些漫长、艰苦的工作和承诺终于有了成果。
On a summer evening in Beijing in 2008, all those long, hard hours of work and commitment finally bore fruit.
事实上，掌握数字单词的确切含义是一个艰苦的过程，需要花费孩子数年的时间。
In fact, acquiring the exact meaning of number words is a painstaking process that takes children years.
在一个领域，它付出了艰苦的努力来量化生育偏好，以得出计划生育和非计划生育的数据。
In one area, it made painstaking efforts to quantify fertility preference to derive figures for planned and unplanned pregnancies.
这种直觉不是武断的或非理性的，而是建立在多年艰苦的实践和建立技能的实际经验的基础上的。
This intuition is not arbitrary or irrational, but is based on years of painstaking practice and hands-on experience that build skills.
这本书最让人印象深刻的是，作者伊丽莎白·盖斯凯尔为描写工人阶级家庭的日常生活，付出了艰苦的努力。
What is most impressive about the book is the intense and painstaking effort made by the author, Elizabeth Gaskell, to convey the experience of everyday life in working class homes.
他们愿意做艰苦的工作来确定自己有价值的技能；学习如何向潜在雇主展现自己；即使一再受到拒绝，也要坚持下去。
They're willing to do the hard work of identifying their valuable skills; learn how to present themselves to potential employers; and keep going, even after repeated rejections.
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