Production-relations are the relation between each key element in social production.

生产关系是社会生产中各要素之间的关系。

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Each criterion relates to a key element of sustainability, and may be described by one or more indicators.

每项标准涉及可持续性的一个关键要素，可用一个或数个指标加以描述。

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For each data element, LOM specifies a name, explanation, size, example value, data type, and other key details.

对于每个数据元素，LOM都规定了名称、说明、大小、示例值、数据类型以及其他重要细节。

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Because if you did what I suggested with the list, the time to look up the key would be linear in the length of the list. You'd have to look at each element until you found the key.

字典是用一种很神奇的，叫做散列法的算法,来实现的，后面我们将,会学到一点关于。

麻省理工公开课 - 计算机科学及编程导论课程节选