1.A principal problem was the flat refusal of the President to confront his advisers directly on the central question.
主要问题是总统根本拒绝让他的顾问们直接面对中心问题。
2.The new plan seems to make sense if and only if the principal problem is illiquidity.
只有当首要问题是缺乏流动性的时候，新的计划才似乎有意义。
3.The principal problem facing the US and Europe for the next few years is an output shortfall caused by a lack of demand.
未来几年美国和欧洲面临的主要问题，将是由需求不振导致的经济产出不足。
4.In the 1980s and even at the close of the war, the principal problem was to achieve and maintain high levels of output and employment.
在20世纪80年代甚至是在二次大战结束时，经济的基本问题是达到并保持高水平的产出和高就业率。
5.The principal problem that has to be solved before man can exist in space is that of providing a microclimate in which he can survive .
人类要在太空中生存，必须解决的首要问题是要提供一种适合人类生存的小气候。
6.'Milan has no immediate need to buy new players and that's not the principal problem.
米兰现阶段没有买新球员的必要，这不是主要问题。
7.The disadvantages of state-owned venture capital pattern derive from its agent-principal problem and lack of special ability.
国有创业投资模式的症结主要源于其自身的委托代理问题以及专业能力的缺失。
8.It is universally acknowledged that 'Energy-Saving and Environmental Protection' is principal problem to be resolved.
“节能环保”是当今所要解决的首要问题。
9.The principal problem appears to be the use of the anecdotal 'case study' approach by prediction researchers.
最基本的问题看来是预测研究者们采用的轶事一样的‘地震事例研究’的研究途径。
10.Scholars in the west attach great importance to the state-education relationship, a principal problem in comparative education research.
国家与教育的关系是比较教育研究的基本问题，当代西方学者对此给予高度关注。