English translation for "a difficult problem"

一道难题

Related Translations:

difficult compound:  难混胶料

difficult coal:  难洗煤

difficult micturation:  膀胱不利

difficult swallowing:  吞咽困难

difficult asthma:  难治性哮喘

difficult fertilization:  难于受精

impossible difficult:  等字去代替

difficult thing:  你做成的难事

difficult ground:  丘陵地区问题地区；特殊土地区

difficult defecation:  排便困难

Example Sentences:

	1.	A difficult problem or two occupied his mind . 有一两个困难问题在他心里回旋。
	2.	How to improve the quality of products was a difficult problem to him . 如何提高产品质量对他来说可是个难题。
	3.	The presence of water containing hard particles presents a difficult problem for the sealing . 含有坚硬颗粒的水，给密封带来一个难题。
	4.	How to satisfy this mass demand and at the same time maintain cultural standards is a difficult problem . 如何在满足这一广大需要的同时又能保持文化水准是个难题。
	5.	Crime is a difficult problem in many cities 犯罪在许多城市都是令人头痛的问题。
	6.	User and group management is a difficult problem 用户和组管理是一个困难的问题。
	7.	She was faced with a difficult problem / decision 她面临一个困难的问题/选择。
	8.	Fish disease has been a difficult problem faced by fish farmers 鱼病是养鱼户经常面对的难题。
	9.	Fish disease has been a difficult problem encountered by fish farmers 鱼病是养鱼户面对的难题。
	10.	This is a difficult problem . at the same time it is very interesting 这是个困难的问题，但却极为有趣。

Similar Words：

"a different shore" English translation, "a different type of" English translation, "a different view of love and hate" English translation, "a difficult catch" English translation, "a difficult part" English translation, "a difficult question" English translation, "a difficult-to-operate machine" English translation, "a digital watch" English translation, "a dignified appearance" English translation, "a dignified gentleman" English translation