However, due to the mismatch between the XML's tree structure and flat relational tables, mapping XML document to relational database is an involved problem. So it becomes a pop research direction.
然而由于复杂的树形XML文档和简单平坦的关系型数据库表结构之间固有的不匹配，使得XML到关系型数据库的映射实现十分困难，因此成为当前的一个热门研究课题。
The solution to this problem is not to try to use money as an incentive to do housework, but to get children involved in housework much earlier, when they actually want to do it.
解决这个问题的办法不是用钱来激励孩子们做家务，而应该在他们真的想做家务的时候，让孩子们尽早参与其中。
The problem is that often only one facet of an idea is what truly excites us, while the rest of what's involved in the job may be downright annoying.
问题是，一个想法通常只有一个方面才是真正让我们兴奋的，但是牵涉到这项工作中的其他事情可能是完全让人讨厌的。
Alternatively there is a problem with the experiment - but Flowers, who was not involved in the measurement, believes that Pohl's team has done an excellent job.
另一种可能他们的实验有问题，但是富伦并没有参与测量过程，宁愿相信波尔团队的工作做的很好，没有出现这方面的问题。
These data suggest that there is an underlying biological problem directly involved in obesity.
但是这些数据却表明一种潜在的生物学问题与此有着直接的联系。
Well, I'm involved with an organization, and we're trying to resolve that problem.
说起来，我参加了一个组织，我们这个组织正在力求解决这个问题。
United's Ryan Giggs and Paul Scholes are likely to play tonight and Nemanja Vidic has an outside chance of being involved, after overcoming a nerve problem in his leg.
曼联的吉格斯和斯科尔斯今晚可能会参赛，而腿上有伤的维迪奇有机会进入名单。
The argument occurred when people involved in making a process of inferring for an unknown problem, or interpreting the problem which was solved.
人们在对未知问题作推测，或对已解决的问题作解释时会涉及两种观点的论争。
Whether an underwriter does a traded-based manipulation is a core problem involved the market information efficiency.
承销增发新股中承销商是否存在交易操纵行为是涉及到市场信息效率的关键问题。
In fact, it is not only a simple accounting problem but an involved social one.
但是实际上，它不是一个简单的会计问题，而是一个较为复杂的社会问题。
But I chose a long time ago not to be involved because I thought I would add to the problem, but now I think it's an important time to stand up and be part of the problem for me.
但我选择了一个以前没有参与，因为我想我会增加的问题很久了，但现在我认为这是一个重要的时刻站出来对我问题的一部分。
It was the worst thing that could have happened because the involvement of a senior manager escalated the problem, lawyers got involved and it ended in an industrial tribunal.
这是可能出现的最坏结果，因为高管的介入使得问题升级，律师卷入其中，最终只能在劳工申诉法庭上解决。
It was the worst thing that could have happened because the involvement of a senior manager escalated the problem, lawyers got involved and it ended in an industrial tribunal.
这是可能出现的最坏结果，因为高管的介入使得问题升级，律师卷入其中，最终只能在劳工申诉法庭上解决。
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