有困难的

Dec:It has been difficult to maintain any regular contact with most of them as our lives are different, but occasionally I come across some of them.

跟以前很多人保持联系是很困难的，因为我们现在有不同的生活。但是偶尔我会遇到他们一些人。

"When accounting for a merchandising firm, the problem of properly matching revenues and expenses becomes more difficult because of a large inventory of items, seasonal fluctuations and inventory purchasing policies."

为商业企业作帐时，收入和支出的恰当配比变得更加困难，因为有大量的库存，季节性波动，以及进货存库策略等原因。

"When accounting for a merchandising firm, the problem of properly matching revenues and expenses becomes more difficult because of a large inventory of items, seasonal fluctuation s and inventory purchasing policies."

为商业企业作帐时，收入和支出的恰当配比变得更加困难，因为有大量的库存，季节性波动，以及进货存库策略等原因。

As I said that's the more difficult part, and most of us have difficulty, with some of the minor prophets.

正如我所说的那样，这部分更加难以理解，我们大部分人对某些小先知书的阅读都有困难。

P×P and P were two major non-Bayesian algorithms. 6 Less than 25% of the participants used frequency. In those who got other results except P , much more people used probability. Experiment 2 had a randomized multigroup posttest design. There was only one factor named implied condition which had five levels: not imply, imply P, imply addition, imply division and imply all. The results showed that: 1 All the implied conditions significantly improved the participants' performance. When under the condition of implying division, the participants derived the best results. 2 31.9% of the participants got correct answer, 73% of who used frequency to rewrite the information. 3 78% of the participants could apply one or several of the four concepts: probability of "not the event", multiplication rule, addition rule and condition probability.

结果表明：1 被试的估计受问题内容的影响，权威型问题情境容易使被试高估，非权威型问题情境使被试的高估现象大大减少；数据结构和提问形式对被试估计不产生影响。2 有近5%的被试能正确估计P，其中 73%使用频数对信息进行再表征。3 贝叶斯推理中各分步骤的困难程度由低到高分别是：乘法、P、加法、除法。4 有50%的被试能运用对立事件概率、概率乘法、概率加法、条件概率这四个概念中的一种或者几种。5 使用最多的两种非贝叶斯算法是P×P和P。6 不到25%的被试使用频数；求得除P以外各类结果的被试中，使用概率的人数远多于使用频数的。

Like musical notation , modern mathematical notation has a strict syntax and encodes information that would be difficult to write in any other way.

像乐谱，现代数学符号有严格的语法和编码信息，将是困难的收件以任何其他方式。

With one, you can reach things that are out of reach and, therefore, difficult to get.

有了梯子，你才能取得不易拿到和因难得到的东西；因此，这是一种困难的事。

Maintaining high power output for 24 hours in a streamliner is very difficult for many reasons.

保持较高的输出功率为24小时在streamliner是非常困难的原因有很多。

If you're brave enough to want to know your future, it isn't hard to find a palmist to help.

如果你有足够的胆量想知道自己的未来，寻求手相师帮忙并不困难。

If you'd like to help a friend who's in a financial mess, enjoy each other's company on the cheap, says Liz Perle, author of "Money, a Memoir: Women, Emotions, and Cash."

如果你想帮助有经济困难的朋友，少花钱来享受彼此陪伴，"钱，回忆录：女性，感情，金钱"一书的作者 Liz Perle称。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。