Mary complains that it has been difficult to find experienced candidates.
玛丽抱怨很难找到有经验的候选人。
But spokeswoman Claire Hassett said examining the damage has been difficult.
但公司发言人克莱尔·哈西特(ClaireHassett)表示，现在调查由此带来的损失非常困难。
Even in newer thin-film technologies, high-volume production has been difficult.
即使现在使用新型薄膜技术，大批量生产仍然是件难事。
Needless to say, continuing to do her research while battling bipolar disorder has been difficult.
不必说，和躁郁症斗争同时继续她的研究一直很艰难。
However, seeing the changes that are made in the portal configuration has been difficult up until recently.
不过，到目前为止，查看在门户配置中进行的更改非常困难。
Creating reliable tests for these illegal compounds has been difficult.
对这些非法的化合物进行可靠的检测一直以来都是困难的。
I've been suspended, which has been difficult, and I'm just hoping to come back now.
我被禁赛了，这很艰难，我希望回到球场。
Chromosome identification by traditional banding technique has been difficult in oysters.
传统的带型技术很难鉴定牡蛎的染色体。
Our galaxy's core is a frenzied place, and identifying baby stars there has been difficult.
银心是一个混乱的区域，从中辨识出早期恒星很难。
We also acknowledge that it has been difficult for newspapers to make money from their online content.
我们也承认，要报纸从它们的网络内容中赚钱是困难的。
Reports say the site of the crash has been difficult for emergency workers to reach because of heavy snow.
报道称，由于大雪的缘故，紧急救援人员难以到达坠机现场。
But the traditional exchange model has been difficult to meet the needs of the modern second-hand exchange.
但是传统交易模式已经难以适应现代二手物品交易的需要。
Testing this theory has been difficult, however, because no supernova has gone off in our galaxy since 1680.
但是，要验证这项理论却非常困难，因为自1680年起银河系内就不曾发生超新星爆发事件。
The mission in Iraq has been difficult and trying for our nation. But it is in the vital interest of the United States that we succeed.
对我们的国家而言，在伊拉克承担的使命是困难而艰巨的，但取得成功对美国的利益至关重要。
For a long time, the theory of literary criticism in China has been difficult to vie with that in Western countries for lack of a system.
长期以来，中国文学批评理论缺乏体系，难以与西方文学批评理论相抗衡。
The immune system's rejection of transplanted organs has been difficult to explain from an evolutionary perspective, according to Garcia.
据Garcia讲，免疫系统对移植器官排斥很难从进化论角度解释。
But proving this has been difficult because snatching a sample of the Mona Lisa's face for chemical analysis is, unsurprisingly, frowned upon.
但要证明这一观点则十分困难，因为要刮下一小块蒙娜丽莎的脸作为化学分析样本是无论如何都不可能得到允许的。
Copyright Law of China listed manner defined by the scope of fair use, but this criterion has been difficult to apply in the digital environment.
我国著作权法采用列举方式明确规定合理使用的范围，在数字环境下，这一判断标准已很难适用。
In many cases, individual ability alone has been difficult to fully address the various perplexing problems and take effective and efficient action.
在很多情况下，单靠个人能力已很难完全处理各种错综复杂的问题并采取切实高效的行动。
Nowadays, a single physical field of numerical simulation has been difficult to meet requirements of performance and reliability for turbo-machinery.
当前对单一物理场的数值模拟已经很难满足叶轮机械的结构性能与可靠性等方面的要求。
News on this hot topic has been difficult to report, as many original sources are difficult or impossible for tech bloggers with limited resources to translate.
跟这个热门话题相关的报道很难进行，因为科技博客作者的资源有限，很多原始资料很难或无法翻译。
It has been difficult to estimate the possible wave heights of any tsunami - the waves may not arrive at all or could be as high as 10 metres above normal sea level.
海啸可能达到的波高向来很难估计-海浪可能根本无法到达，或者可高达超出海平面10米。
This year has been difficult because I have spent a lot of money on treatment for my family members, who have repeatedly had malaria, diarrhoea, coughs and measles.
今年很困难，我把大部分的钱用于给家人治病，他们老是得疟疾，痢疾，咳嗽，麻疹。
Explain to interested patients that type II diabetes is known to have a strong genetic component, but it has been difficult to find genes involved in the disease.
向感兴趣的患者说明的时候都解释II型糖尿病和基因有密切关系，但是很难发现和该病有关的基因。
The rest of the world has lagged America in pay-TV both because relatively few people subscribe to it and because, in some countries, it has been difficult to sell advertising.
世界其他地方的付费电视落后美国的原因有二：一是订购者相对较少；二是某些国家很难销售广告。
The rest of the world has lagged America in pay-TV both because relatively few people subscribe to it and because, in some countries, it has been difficult to sell advertising.
世界其他地方的付费电视落后美国的原因有二：一是订购者相对较少；二是某些国家很难销售广告。
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