The problem is to reconcile this result with the principle of reciprocity and the absence of preferred frames of reference . 问题在于要使这个结果与倒易性原理和不存在从尤参照系协调起来。
The problem is that the rainfall is not regular. it is not evenly distributed, either in time of year or geographically . 问题在于雨量不规则，无论从季节上讲或地理上讲，雨量的分布都是不均匀的。
A way to circumvent the problem is to fabricate devices in small islands of silicon on an insulating substrate as shown in fig. 32 . 消除这个问题的一个方法是把器件制造在绝缘衬底的硅岛上，如图32所示。
One way to simplify the problem is to divide the electrons into two groups: the 36 core electrons, and the two 4s valence electrons . 简化此问题的一个方法是把电子分成两组：36个原子实电子和2个4s价电子。
The problem is how we can get so much money 问题是我们怎样才能搞到那么多的钱。
( man ) the problem is my wife is losing all of her teeth 问题是我太太牙都拔光了
The problems are put forward under the condition 本课题就是在此基础上提出的。
The problem is so easy that we can work it out 这个问题很容易，我们能算出来。
The problem is when to get the money we need 问题是什么时候能得到我们所需要的钱
The problem is , i could not make myself stop thinking 问题是，我没有办法不想。
