查询词典 extremely difficult

All of this makes the net benefit of reforestation extremely difficult to measure.

所有这一切都使得重新造林的纯利益极难估算。

It's extremely difficult for some people to save for their retirement.

这是极为困难的一些人以节省他们的退休生活。

It is extremely difficult to rouse my father in the mornings.

每天早上要把我父亲叫醒可真不容易。

Mister Sagan worked for many months on what to say in the message. It was an extremely difficult task.

萨根先生为这条信息应该说些什么忙了好几个月，这是一项非常艰巨的任务。

Also, it is extremely difficult to respond satisfactorily to words you didn't hear.

而且，对自己没有认真聆听的问题做出满意的回答是极其困难的。

The value of the securities is extremely difficult to determine.

这些证券的价值是很难估计的。

It is extremely important and difficult in China to combine development, reform and stability. Seeing is believing.

在中国，把发展、改革和稳定三者结合起来具有极端的重要性和艰巨性。

The advantage of SGML is that it can run independent of any software program but, unfortunately, it is extremely complicated and difficult to learn.

SGML的优点是它能独立于任何软件程序运行，但不幸的是，它极端复杂和难学。

As a writer, Sherwood Anderson is extremely difficult to evaluate.

对于安德森很难做出合适的评价。

She always referred to them as the shifting population, for they came and went with such frequency that I never even got a chance to learn their names, Though my aunt pursued what was, in those days, an enlightened policy in that she never allowed her domestic staff to work more than eight hours a day, she was extremely difficult to please.

她称这些佣人叫"流动人口"，因为他们来去匆匆，所以我甚至都没有机会知道他们的姓名。姑妈待佣人在当时算是开明的，从来不让佣人每天工作超过8小时，但他们很难使她称心如意。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。