如果可以，就将值限制为字母和数字。

If you can, limit the values to letters and digits.

youdao

您可以将查询的输出仅限制为特定字段。

You can restrict the output of the query to specific fields only.

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饮料仅仅限制为水、低脂肪牛奶和果汁。

Drinks will be limited to water, low-fat milk and juice.

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So you know, what the second law is doing, in other words, it's putting these restrictions on how well or how effectively we can convert heat into work in the case of the engine, or work into heat extracted in the case of a refrigerator.

你们知道，在热机中，热力学第二定律的作用，换句话说，就是给热量,转化为功的效率,施加限制,或在制冷剂中，对抽取热量,进行限制。

麻省理工公开课 - 热力学与动力学课程节选

One of the big problems with studying human diseases is that you can study how they occur in people but there's only a limited amount that you can learn from people.

在人类疾病研究中的一个难题是,你有能力研究发病原因,但以人类为样本做研究却是备受限制

耶鲁公开课 - 生物医学工程探索课程节选

This is the force or purpose of law to set rules, to keep people, as he puts it, on their way, a law that is intended simply to constrain and control for its own sake, Hobbes says, cannot be a good law.

这就是法律的目的，制定一定的规章制度，引导人民走正确的路子，霍布斯还认为,那种简单地为了限制和控制为目的法律，是不能称之为好的法律。

耶鲁公开课 - 政治哲学导论课程节选