很难保持有竞争力的定价。
问题是，这种冲动很难保持。
一些移民拥护者担心，经济困难会令当地人很难保住工作。
Some immigrant advocates worry that hard financial times make it more difficult for natives to keep jobs.
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.
在他的课上，许多学生如果不先喝一杯咖啡，就很难保持清醒。
Well, many students could hardly stay awake in his class without first drinking a cup of coffee.
发达国家很难保持人口规模。
It would be difficult for developed countries to maintain the size of population.
很难保持专注。
明天难保不下雨。
网络捐款者也趋向于更难保留。
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。
没有玩笑，而且很难保持积极的心态。
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.
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.
素食越是严格，就越难保证身体需要的营养。
The more restrictive a diet is, the more difficult it is to get all the nutrients your body needs.
规模太大难保？
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.
当不希望的事情发生时，我也很难保持乐观平和。
It's very difficult to stay positive and balanced when things you don't expect happen.
我发现在结冰的路面上走时很难保持身体平衡。
难保存吗？
如果你不计划时间进行锻炼并全心投入，你就很难保持积极性。
If you don't plan time for exercise and dedicate yourself to it, it's hard to stay motivated.
船上落后的制冷系统很难保存水果和蔬菜，有时引起船员们不满。
And poor refrigeration on its ships makes it hard to preserve fruit and vegetables, something that makes for griping on board.
她对自己品牌如此的警惕，很难保证在动荡噪杂的媒体市场取得成功。
Such vigilance about her brand is hardly a guarantee of success in the volatile and cacophonous media market.
苹果可能是我们最爱的水果之一，但它们放久了便很难保持爽脆口感。
Apples may be among our favourite fruits, but they rarely stay crispy for long enough.
销售的突然下降将让他们没有现金，同时银行透支额也很难保证或增加。
A sudden fall in sales will leave them without cash at a time when bank overdrafts are hard to secure or to increase.
有时候灾难保险的费用高得令人咂舌，但灾害是否会发生还是未知之数。
Sometimes the price of catastrophic insurance is chokingly high while the risk remains remote.
最糟糕的是土壤物理结构的变化，如果表层土壤侵蚀，土壤更难保水保肥。
Worst of all, the physical structure changes if the top soil erodes, making it harder for the land to retain water or fertiliser.
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