当然，家长关注的主要问题有其梦游的孩子他们的安全。

Of course, the main concern parents have for their sleepwalking child is their safety.

youdao

所以设计一个REST风格的客户端服务器应用程序的主要问题有。

So the key questions for an architect of a REST-style, client-server application are.

youdao

他是一个天赋的――对主要问题有明晰理解力的慎密的人。

He was a godsend-a master of detail with clear comprehension of main issues.

youdao

OK. So to do this, we need a little more abstract way of talking about efficiency, and so, the question is, how do we think about efficiency? Typically there's two things we want to measure.

好，为了达到这个目的,我们需要用一种有点，抽象的方式去讨论效率，这衍生出来,一个问题，我们该怎么去认识效率？,主要来说我们有两个要量化的东西。

麻省理工公开课 - 计算机科学及编程导论课程节选

So, many people have relatives they know of that have had to have their heart imaged -- heart disease is a major problem in the United States, and there's a good chance that they had Cardiolite given to them to help in that imaging process.

它被用在心脏成像中,很多人都有一些亲戚他们-,必须要做心脏成像，心脏病已经是美国的一个主要问题,而很有可能他们就要用到Cardiolite来成像。

麻省理工公开课 - 化学原理课程节选