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1、difficult times───困难时期
2、a difficult───困难的
3、difficult period───困难时期
4、extremely difficult───万难；千难万难；难得要命；难上加难；极其困难的
5、difficult───adj.困难的；不随和的；执拗的
6、more difficult───更难的（difficult的比较级）
7、quite difficult───非常困难
8、difficult tasks───艰巨的任务
9、difficult if───如果
1、The next few years are going to be difficult in the best of cases.───因此，即使按最好的年景，未来几年也是困难重重。
2、It was also noted that the constitution itself envisaged that ratification might be difficult in some countries.───同时他们认识到宪法本身性质决定了其在某些被批准的困难性。
3、And, of course, so surrounded by admirers, she must be difficult in her choice.───追她的人当然很多，她都挑花了眼。
4、In an ideal situation (though it might be difficult in the short-term), one metadata repository stores all metadata artifacts.───在理想的环境中（在短期内实现可能比较困难），元数据储存库可以储存所有的元数据构件。
5、True component Development - While simple in concept, componentized software can be difficult in practice.───真正的组件开发——虽然组件开发概念很简单，但是真正开发组件化软件的时候，却是困难重重的。
6、This can be difficult in a production application where restarting it relies upon a manual step to deploy the web service.───这在生产应用程序中可能比较困难，因为要依赖手动步骤重新启动来部署Web服务。
7、They are a fine team that we aren't as good as, basically, and it was always going to be difficult in those two games.───他们是一个很优秀的队伍，但从根本上来说我们并没有他们那样的出色，这将是。
8、In practical terms this law may be difficult to enforce.───从实际的角度来看，这项法律可能难以执行。
9、This kind of behavior would be difficult in a system with a freer media and an independent judiciary.───在一个媒体更自由而司法权更为DuLi的体系中，发生这类行为会较为困难。
1、It is effective over a wide temperature range although lighting may be difficult in extreme cold.
2、Male speaker Despite our fears that life would be difficult in fact the community has recovered very quickly.
3、Finding a doctor can be difficult in a foreign country .
4、Synchronizing these attacks may be difficult in the fog of war.