很难保持有竞争力的定价。
问题是，这种冲动很难保持。
他认为，好奇心是第三个关键因素，也是一个很难保持的因素。
Curiosity, he argues, is the third key factor—and a difficult one to preserve.
很多人都在赶时间，很难保持小心谨慎，因为他们更关心自己的速度，而不是你的安全。
A lot of people are in a rush, and it's very difficult to keep careful, for they would rather care for their speed than your safety.
明天难保不下雨。
你赶快跑，不然的话你生命难保啊！
这导致测试用例很难保持最新。
This results in test cases being difficult to keep up-to-date.
生活在银河系，很难保持谦虚。
就是神，在爱情中也难保持聪明。
就是神，在爱情中也难保持聪明。
没有玩笑，而且很难保持积极的心态。
就是神，在爱情中也难保持聪明。
异种材料焊接时焊接质量较难保证。
It is difficult to ensure quality when welding different materials.
在结冰的人行道上很难保持平衡。
但有时则很难保持这种关系。
But sometimes it is hard to keep these family relationships.
我自身难保了，这条烂规定可以废止吗？
Okay, so I'm endangering myself so that this evil principle can die?
这是很难保护自己免受冰雹。
他自己很难保证自己的温暖。
年纪越大，你会发现越难保持以往的体型。
As you get older, you may notice that maintaining your usual weight becomes more difficult.
在这个疯狂的世界里很难保持精神正常。
很难保证做到保持高质量而不提高价格。
It is difficult to make sure that the quality remains up without increasing the price.
吵闹声不绝于耳，我很难保持精神集中。
I found it hard to keep my concentration with such a noise going on.
当然，在不久的将来很难保持这种增长速度。
It will, of course, be hard to maintain this pace in the immediate future.
然而，布什离任很难保证路线会往中间转移。
Yet Mr Bush's departure hardly guarantees a move back to the centre.
在大城市很难保持健康。
美有如盛夏的水果，而容易腐烂而难保持的。
Beauty is as summer fruits, which are easy to corrupt, and cannot last.
我发现在结冰的路面上走时很难保持身体平衡。
有时候很难保持安静，因为这时候的你有点紧张。
It's difficult to keep quiet sometimes because you might be a little nervous.
许多今天的印刷资料很难保存下来为后人所用。
Much of today's printed material will not survive to be available for future generations .
许多今天的印刷资料很难保存下来为后人所用。
Much of today's printed material will not survive to be available for future generations .
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