难

The wise never marry, and when marry they become otherwise.

聪明的人都是未婚的，结婚的人很难再聪明起来。

Andrei Arshavin admits he is finding it hard to adapt to life in London.

安德烈阿尔沙文承认，他觉得要适应伦敦的生活很难。

Andy, this is hard for me.

安迪，这对我来说很难

But it's hard because there's only anecdotal evidence about you.

这门课很难，因为关于你的证据仅限于传闻

The crystal architecture of the sea anemone,and you'll deal that to me now?

关于海葵的晶状结构，你想用它来难住我吗？

Ideally, the anesthetist should take a full history and examine each patient, but for the reasons already identified this is seldom possible.

理想的状况是麻醉医生应该充分了解患者病史并检查每一位患者，但是由于一些已知的原因却很难做到这一点。

A new study published in the journal of the American Dental Association suggests that a genetic variation may make redheads more difficult to anesthetize and as a result they tend to avoid the dentist more than blond, brown or black haired people.

美国牙科协会杂志》中发表的一项最新调查研究认为，由于人类基因多样性可能导致红发人更难被麻醉，所以和金发、棕发或黑发人相比，他们更不愿意去看牙医。

Because of the non-linearity, time- variability, multi-parameter, intense coupling of the heating process and especially, the random interfere and anfractuosity of process, precision mathematics model is difficult to be established. The routine PID algorithm can not meet the requirement of control.

高岭土回转窑的加热过程中存在非线性、时变性、多参数强烈耦合这些问题，且随机干扰以及过程机理错综复杂，难以建立被控对象的精确数学模型，采用常规的PID算法很难达到控制要求。

The angle or inclination of a line or surface that meets another at any angle but90=.

十一出行难？跟我来看看英语写作擂台期待你的加入喔

But once the Anglo-French divide is transcended, the question of what defines the Commonwealth becomes still harder.

但一旦超越了英法分歧，英联邦就更难界定了。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。