Muscles will only contract forcefully a certain number of times before they refuse to pull hard again.
肌肉在强力收缩一定次数之后将无法再继续用力的拉缩。
Many teens find it very hard to pull themselves away from these devices.
许多青少年发现自己很难与这些设备保持距离。
Naturally, the waiter was horrified, but he tried hard to pull himself together and stopped him for an explanation.
服务员自然被吓坏了，但他努力强撑着，拦下他，想要一个解释。
Asset disposals, one obvious way of raising cash, are extremely hard to pull off at the moment.
而资产处置——一个募集现金显而易见的办法——在非常这个时期也很难作到。
After all, EADS has found it hard to pull existing assets together successfully.
简言之，EADS在成功整合现有资产方面遭遇了很大困难。
As Obama noted, the standard rhetoric of John McCain's party is that any American should be able to pull herself up by her bootstraps if she works hard enough.
如同奥巴马所说，约翰·麦凯恩的共和党的标准论调是每个美国人如果够努力的话，都应当能靠一己之力出人头地。
Now markets have reached a stage, in the biggest economies at least, where the carry trade looks hard to pull off.
现在，至少在大的经济体中，市场已经到达了一个难以将套息交易剥离出去的阶段。
There is something to this: it can be devilishly hard to pull apart fiction from reality.
这很说明问题：要把虚构的东西和现实剥离开来可能极端困难。
That’s hard to swallow in an industry where “a buck” is code for $1 million, and where top producers can pull down 20 or 30 “bucks” a year, or even more.
很难想象一个行业里，一头雄鹿意味着1百万美元，那些顶层的高管们得到20或30头雄鹿一年，甚至更多，除非你在华尔街工作。
It's a hard assignment to pull off, and I have some methodological concerns with the study.
这是一个艰巨的任务，而且我对此研究在方法层面便存有担心。
They are quick to pull out the wallet or purse and hand over their hard earned cash.
他们很轻易的拿出钱包或钱夹，把自己辛辛苦苦挣来的钱移交他人。
But it is still a hard trick to pull off, and it has not happened often.
尽管如此，这还是一种很难完成的事情，并且并不常见。
I pull the heavy plastic door of the Dumpster back, trying to balance it on the wall. Because of the placement, this is hard to do, requiring no small amount of effort.
我拖着垃圾箱后面沉重的塑料门，试图把它平衡在墙上，因为位置特殊，不花一番努力是难以做到。
If your server doesn't support disabling the local disk adapter directly, you can simply pull out your local hard disk physically.
如果您的服务器不支持直接禁用本地磁盘适配器，您可以卸下本地磁盘。
Lars von Trier has a reputation for being hard on his actors and for Icelandic singer Bjork's acting debut, he certainly didn't pull any punches.
拉斯·冯·提尔出了名的对待他的演员很严苛，即使对首次演出的冰岛歌手比约克，他也不会手下留情。
But it's hard to imagine too many other figures in world football with the guts to take such a bold step, much less to pull it off.
但还是很难想象世界足坛还能有几个人有此胆量做出如此大胆的举动，更不用说还奏效了。
Whole bricks were attached to it by ropes wrapped around the drum. No wonder itwas hard to pull up.
铁鼓与几块砖头被绳索紧紧绑在一起，难怪那么难拉上来。
However Michael reiterated that though it might be hard to accept that a devloper or a tester does not have anything to do, it is essential to follow the WIP rule else the pull system would not work.
然而Michael重申，虽然要接受一个开发人员或者测试人员无事可做这一情况可能很难，但遵守WIP规则是必不可少的，不然拉动系统就不能正常运作了。
Practicing yoga should not be too hard, or it will pull your muscles.
练习瑜伽时千万不能太用力，否则会拉伤肌肉。
With their ability to pull extremely well and hit monsters hard from far away, they certainly help take down monsters more quickly.
使用他们完美的远程及拉怪能力，他们能十分迅速的放倒怪物。
Even if many of those are low-end devices and incompatibility between them continues to make life hard for developers, the Android ecosystem is starting to exert a powerful pull.
就算这些手机中许多只是低端手机，手机之间的不兼容性继续令开发者头疼，但安卓的生态系统已开始产生强大吸引力。
It seemed to be quite hard to pull away in the opening stages, but then you seemed to pull away more easily.
在比赛开始阶段很难拉开差距，但是你似乎很容易就带开了距离。
But even a plan like this - which would move only about 60 people - has been hard to pull off.
但是，就连这样一个仅迁移约60人的计划也很难实现。
Carry by hand or shoulders when laying electric heating cables. Dont't fold hard or pull on the ground with long distance.
施放电热带时应手提或肩背，不要打硬折或长距离在地面拖拉。
They hung on to their vines as hard as they could because they felt they would pull out.
他们尽可能的抓住葡萄树，因为他们觉得他们会被连根拔起。
There are some intrinsic drawbacks in traditional push-pull converter, such as higher voltage stress and hard-switching of the switches, so the application area of the converter is limited.
传统的推挽变换器存在着一些固有的缺点，诸如开关管的电压应力高、难以实现软开关等，限制了它的应用范围。
This can be hard to pull off, both administratively and in terms of getting your organization to cooperate with your fiddling with their systems.
就管理来说，这可能难以实现，而且用户的系统可能去法配合。
You can touch it, or even give a hard pull at its tail, without causing it to move or wake up.
你可以摸它，甚至使劲拉它的尾巴，也不会使它动一动或是醒过来。
They were so deeply absorbed in watching the show on television that they found it hard to pull away.
他们聚精会神地看着电视里的表演，舍不得离开。
They were so deeply absorbed in watching the show on television that they found it hard to pull away.
他们聚精会神地看着电视里的表演，舍不得离开。
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