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Also, it was kind of clear that no one wanted to hurt themselves too much. They all know that if they're going to be out for a longish period, then it can be really difficult to make a come back in a team of this strength.

但是，非常明显可以看到没人想让自己受伤，他们都知道如果离开久了，要想在一支如此强大的队伍中完成回归就很困难了。

Moreover, children will have less time to play and communicate with their peers due to extra studies, consequently, it is difficult to deve lop and cultivate their character and interpersonal skills.

而且，由于要额外地学习，孩子们没有多少时间和同龄的孩子玩耍和交流，很难培养他们的个性和交际能力。

Has a remarkably wide range, though it is difficult to achieve (the high b makes the first string very taut such that it will break easily), and may not play well on an acoustic guitar (the low C is too low to resonate properly in a standard guitar's body). Luthier Todd Keehn claims to have been the first guitarist to adopt an all-fifths tuning, his being arranged G-D-a-e-b'-f#', and he has made an all fifths tuned guitar that can be seen at his website, http://tkinstruments.com/.

这个调弦的音域相当地宽，但是也很难达到要求（高音B使第一弦崩得非常紧，容易断）这个调弦在原声吉他上的效果也不理想（低音C太低在普通的箱琴上无法产生共鸣）据说Luthier Todd Keehn是第一个用这种调弦的吉他手，他还用 G-D-a-e-b'-f#调弦，他的全五调弦的琴可以在他的网站上看到 http：//tkinstruments.com/。

For shots and pills, women need to make regular appointments with their doctors and then they need to get prescriptions in order to obtain the medication. Diaphragms also require medical examinations. While sponges do not require examination, they can be far more difficult to obtain then condoms.

就像避孕环和避孕药，女性还要定期和她们的医生见面，有医生的处方才能拿药；子宫帽也需要医学测试；避孕海绵不需要医学测试，但获得它们比获得避孕套难多了。

It's difficult to make football fans to 删掉TO, make do sth keep quiet.

要使足球迷们平静下来是很困难的。

Will it be so difficult to spell or to pronounce that your child will be condemned to a lifetime of seeing and hearing people mangle his or her name and having to endlessly correct them ?

才会有那么难拼写或发音，您的孩子将受到谴责，以了一生的看到和听人轧他或她的名字，并无休止地正确的呢？

But it is very difficult to measure the marginal contribution, so the strategy of "Tit for tat" has to be adopted in order to encourage members in an organization to secure the encompassing interests.

由于成员的边际贡献难以测度，因此只有通过实施"一报还一报"的策略才能激励成员实现组织的共容利益。

At the same time, to counter the problem that traditional coding method of genetic algorithm is difficult to design for this model, conventional genetic algorithm is modified by extending encoding method form digital string to matrix and defining corresponding genetic operator operation, this make encoding clear and understanding easy.

同时，针对遗传算法传统编码方案所存在的问题，提出了遗传算法的改进方案，将染色体结构由传统的数字串扩展到多维数组，并定义了相应的遗传算子操作，使得编码清晰、易于理解，遗传算子操作方便。

The letters were at first granted only after mature consideration, but from the end of the fifteenth century it was less difficult to obtain them; in many cases the general handed numerous blank forms to provincials and priors to be distributed by them at their own discretion.

这些信件是在第一次后才能获得成熟的考虑，但是从去年底的15世纪，它是那麼困难，以取得他们的，在许多情况下，一般交了许多空白表格，以provincials和先验将分发给他们，在他们自己的决定权。

Mayhew concluded that it is rather difficult to tell whether derivative markets worsen financial-market volatility, because their creation tends to come when existing financial markets already are more volatile, or can be predicted to become so.

梅休的结论是：确定衍生品市场是否加剧了金融市场的动荡非常困难，因为金融衍生品市场本身就是在现有金融市场波动加剧、或预计有可能波动加剧的情况下才得以创立。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。