有困难的

Keeping balncc of oxidation-reduction equation is a difficult problem in the chemical teaching, especially in high school. The author induced from a great wany materials a new mcthod, namely,"grasp one molecule", which is readily accepted by strdents.

氧化——还原方程式的配平是化学教学中的难题，特别在高中化学中，学生尤感困难，本文是作者从自身氧化还原反应，有单质参加和有单质生成的氧化还原反应诸方面归纳出一种学生易于接受的方法即&抓1分子法&。

The blue-blooded son found it easy to get a job in politics because his family had so many connections.

系出名门的公子发现在政界找份工作并不困难，因为他家有很多关系。

This explanation, which absolves Asian governments of responsibility for economic suffering, has an obvious appeal across the region.

这种看法在亚洲很有人缘，并开脱了政府在经济困难上的责任。

What are some of the difficulties you had countered over the last 12 months?

在过去一年中，你所遇到的困难有哪些？

British Prime Minister Gordon Brown says he expects difficult discussions between the Group of 20 nations as they try to figure out ways to revive the cratering world economy.

英国首相戈登·布朗表示，20国集团在拯救全球经济方法的探索上将会遇到困难，但他同时表示有信心这些国家能够达成共识。

The literature defrost the best time for control and maximum average heat defrosting control and so on, theoretically innovative, but more difficult to achieve.

有关文献提出的最佳除霜时间控制及最大平均供热量控制除霜等方法，从理论上讲很有新意，但实现起来比较困难。

By distancing itself from the rest of the field, it would be harder and harder for the competitors to catch up.

当你和&赛场上所有的人&有了距离，对手想迎头赶上，便会越来越困难。

I feel I should tell you that from an administrative point of view the difficulties of extricating this force in full are insuperable .

我觉得应该告诉你，从后勤观点来看，要全部撤出这支部队有不可克服的困难。

In the course of production test , owing to a limited condition, at present the key methods which is swabbing, bailing, gas lift, gasifying water and formation test etc.

在试油阶段由于受条件的限制，目前采用的主要方法有抽汲、提捞、气举、气化水、地层测试等，对求准油层的产量并进行连续产能测试有较大的困难和局限性。

For managing difficult airway, new intubation device such as GlideScope, lightwands, intubating laryngeal mask airway may be other choice if one is familiar using these instruments in small babies.

其他应用在困难呼吸道处理之辅助挿管工具有GlideScope、lightwands、挿管喉头罩等。但操作者必须有在婴、幼儿熟练的运用经验。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了