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。
Reducing demand has been difficult.
事实证明，降低需求非常困难。
It has been difficult to gauge the human impact of the accident.
这次事故对人类的影响难以估量。
But it has been difficult to pin down the exact relationships between them.
但要准确定义它们之间的关系还是有困难。
Even within New York City, travel has been difficult.
即使在纽约市里，出门也很困难。
An answer to the first of these has been difficult to obtain.
关于第一问题的答案是很难获得的。
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。
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。
But they insist that is not the case and the decision has been difficult.
但是她们坚称，不是这么一回事，这是个艰难的选择。
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。
That requires industry-wide cooperation, which has been difficult to achieve.
这要求整个行业进行协作，但通常很难办到。
And until recently, it has been difficult to model that complexity in the laboratory.
直到最近，这种复杂的关系还难以在实验室中模拟出来。
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。
The simple via connection has been difficult to achieve high-quality signal transmission.
因此简单的过孔连接已经难以实现高质量的信号传输。
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。
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。
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。
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。
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。
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。
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。
应用推荐