Key-values Stores. The main idea here is using a hash table where there is a unique key and a pointer to a particular item of data.

KV存储的主要思想是一个哈希表，每个item有一个主键和特定的数据值。

youdao

The main idea behind this section was to give you an understanding that there is a wall, and no matter what you do, you will not be able to go around it.

其背后的部分主要思想是给你的理解是，一墙，并没有不管你这样做，将不能够去周围。

youdao

If there's a group, responsibility to help decreases and this is captured in different ways but the main idea is we all think someone else will help so we don't. There's a diffusion.

如果是一群人，帮助的责任就会分散变小,这体现在多个方面,但最主要的想法就是我们都认为别人会帮助,所以我们就不帮助了，责任被分散了。

耶鲁公开课 - 心理学导论课程节选