点表（wells_pts）和源表（wells）之间有外键关系。

The point table (wells_pts) has a foreign-key relationship with the source table (wells).

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这意味着点表中每一行的键值（在这个示例中，由两个列值组成）必须也在源表中存在。

This means that every row in the point table must have a key value (consisting, in this case, of two column values) that must also exist in the source table.

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前言： 本文应用物料平衡的原理，阐明国家环境保护局制定的“八·五”环境试报点表中有关用水、排水指标之间的关系。

The paper, based on the principle of material balance, illustrates the relationship between indexes of water supply and drainage in environmental statistical trial report forms, which is set by.

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The good news is the elements in any one spot in a hash table are likely to be a small number, three, four, five.

好的一点是在哈希表中,任何一个存贮点上的元素数据是很小的,三个，四个，五个。

麻省理工公开课 - 计算机科学及编程导论课程节选

This is a food, a common food that most people would recognize, and I'd just like to see if you could guess what it is from the list of ingredients, so take a moment to look at the list of ingredients and then I'll see if you can guess.

这是一种食品,一种大多数人都见过的普通食品,我想看看,大家能否通过配料表猜出这是什么食品吗,所以,花点时间来看看这张配料表,看看大家能不能猜出来

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