难以

Then, as she started back toward the driver's seat, a vast weariness assailed her and she swayed dizzily . She clutched the side of the wagon to keep from falling.

然后，她准备回到驾驶座上去，可是突然一阵难以抵御的疲惫感涌上心来，她头晕眼花，觉得天旋地转，只好双手抓住车厢板站住，才没有倒下。

The state enterprise staff and workers do exercise regularly, their sports consciousness is well. The foreign enterprise leaders are concerned about staff and workers' health, and consider it for the part of productivity. The individual-owned enterprise's workers lack training atmosphere.

国有企业职工的体育健身较为集中有序，体育意识相对较强；外资企业领导对职工的体育活动较为关心，并视其为企业利润的一部分；私营企业的工人健身较为分散，难以形成规模，缺乏气氛，效果不明显。

Mortgage, or pay their doctor's bills, or save enough for college. There is new

会有在孩子熟睡后仍难以入眠的父母，担心如何偿还按揭月供、付医药费或是存够钱送孩子上大学。

And wonder how they'll make the mortgage, or pay their doctor's bills, or save enough for college. there is new

会有在孩子熟睡后仍难以入眠的父母，担心如何偿还按揭月供、付医药费或是存够钱送孩子上大学。

There are mothers and fathers who willmortgage, or pay their doctor's bills, or save enough for college. There is new

这些士兵的父母会在孩子熟睡后仍难以入眠，他们担忧的是如何偿还月供，如何支付医药费，如何存够今后孩子的大学费用。

"Dodder is a very difficult pest to control," De Moraes says."The reason for that is that it attaches to the host plant, and it makes it very hard to kill the weed plant without killing the host."

"菟丝子是非常难以控制的有害植物，"德·莫拉埃斯说，"由于它缠绕在寄主植物上，若不杀死寄主植物，也就很难消灭它。"

These issues are mostly difficult to solve according to the general study of mathematical models, but the Monte-carlo method is very convenient for calculating Multiple Integral of low dimension in regular domain of integration or complex range or even non-connected region.

这类问题绝大多数按数学的研究处理模式出发，都是难以解决的，而蒙特卡罗方法对计算高维空间中维数不很高且积分区域是规则的积分、以及复杂区间甚至不连通的区域上的积分都却是很方便的。

A lot of pristine rural areas, outer unripe model the city changes a course in finished its blame quickly farming spend change, but this kind transforms and did not make these village community blend in a city smoothly, in the city evolving below the influence in numerous element however most hard the area that fast city turns, formed what what say now namely " the village in the city ", these dorp were immersed in predicament on the last ring that in its the city turns chain.

许多原来的农村，在外生型的城市化进程中迅速完成了其非农化转变，但是这种转变并没有使这些村落社区顺利融入城市，而是在众多因素的影响下演变成了城市中最难以彻底城市化的区域，即形成了现在所说的"城中村"，这些村落在其城市化链条的最后一环上陷入了困境。

Traditional Chinese pharmacy has double complex in bioactive ingredient and functional mechanism and it is difficult to explain by the modern biomedicine theory. So it is seriously restrict the modernization of Traditional Chinese Pharmacy.

中药由于所含有效成分及作用机制的双复杂性，难以用现行生物医学理论解释，严重地制约了中药的现代化。

Whenever a batter hits into a double play, the double play is constituted by a sequence of physical events. It does not follow, however, that we could redene "double play" in terms of precise sequences of physical motions. This is so despite the fact that, if a particular physical sequence constitutes a double play, any physically indiscernible sequence would constitute a double play as well. So being a double play "supervenes" on physical sequences.

无论何时，例如在散打中，一个击打得了两分，这个两分击打是被一连串物理事件所构成，它并不由此得到我们可以根据精确的连续的物理运动来重新定义"双分击打"，尽管事实是，如果一个特殊的物理连续构成了双分击打，但任何物理上难以区别的连续运动也会构成双分击打、（所以，是双分击打，附加在物理连续上。

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％。