困难

But then I'd have to make really difficult decisions like how to apportion our limited water supply.

但我还得做出一些确实困难的决定，比如如何分配我们有限的水资源供应量。

But then I'd HAs to do really difficult decisions like how to apportion our limited runing water supply.

但我还得做出一部份确实困难的决定，比如咋样分配咱们有限的水资料供应量。

Owing to the facts that the marketing price of coal in China is much lower than its real productive cost, and the price ever determined is by no means considering the demand and supply situations of the market, to make the economic appraisal of capital construction projects in Coal mining is still a hard nut to crack.

由于现行的煤炭价格低于煤炭的实际生产费用，且在确定煤价时没有考虑煤炭产品的供求情况，致使煤炭建设项目的经济评价遇到了巨大的困难。

Unfortunately, it is extremely difficult to keep a plasma going for any appreciable length of time.

糟糕的是，要想让plasma约束一个可观的时间是极其困难的。

For their approbation of my public conduct through a period which has not been without its difficulties

你们对我在一个不无困难的时期执政的情况表示认可

Part Two. The approximation theory of distributed parameter systems.

偏微分方程的特征函数理论是研究分布参数系统的一个有效方法，但分布参数系统的特征函数的求取十分困难。

Diagnosis of DRS in a typical case is not difficult, however, children with bilateral abduction deficits which may mimic DRS must be differentiated from the following four motility disorders, namely, abducens nerve palsy, Moebius′ syndrome, congenital oculomotor apraxia, and congenital or infantile esotropia.

典型的DRS诊断并不困难，但是儿童患有双眼外转受限类似DRS者，应与下列4种眼球运动异常鉴别，即外展神经麻痹、Moebius综合征、先天性眼球运动不能和先天性或婴儿型内斜视。

First Africa rebelled, then the Senate with all the people of Rome, and all Italy conspired against him, to which may be added his own army; this latter, besieging Aquileia and meeting with difficulties in taking it, were disgusted with his cruelties, and fearing him less when they found so many against him, murdered him.

甚至连他自己的军队也加入谋反了。因为他的军队包围阿奎莱亚，要夺取它而遇到种种困难的时候，对于他的残酷感到恼恨，同时因为发现他的仇敌是如此之多，也就不太害怕他，于是把他杀死了。

But in the process of ion exchange, xylose molecular is easily converted into arabinose because of catalytic isomerization, which results in the decrease of its purity and difficulty of crystal.

木糖是一种在化工、食品等领域有着广泛用途的五碳糖，工业生产是用稀强酸将玉米芯中含有的大量多缩戊糖分解为单个的木糖分子，然后通过离子交换除盐、脱色，精制提取，但在强碱离子交换柱中，木糖分子容易被部分催化异构转化为阿拉伯糖，使得木糖纯度下降，结晶困难。

I knew it would be harder to cope with for those who had never lived with the constant threat of arbitrary and destructive attacks, especially in an atmosphere in which there was a presumption of guilt attached to any charge.

我知道，对于那些从来没有经受没完没了的破坏性抨击的人，要做到这点比较困难，特别是在一个人们以为只要被指控就必然被判有罪的环境中，更是如此。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。