The vocabulary is very important in studying languages, studying words is relevant to the learners' memory ability, however, the ability is relevant to a lot of factors.

在语言习得中，词汇量至关重要。词汇的习得与学习者的记忆能力有关，而记忆能力又与许多因素有关。

youdao

Bad memory bothers many people in learning English, also a lot of study tells people how to remember words... have you paid attention to Chinese words when your Chinese is in a high level?

坏记忆力困扰人们学英语，大量的记忆理论教人记住单词，你中文水平如此高，究竟花多少精力背汉字？

youdao

But we said earlier that, you know, we're going to get - to the point where we want to have a lot of pieces of -- a lot of variables in memory, maybe 140,000 dictionary words for some future peace set, but we don't want to enumerate line by line by line 140,000 variables.

但是我们之前说过，你们知道的，我们将获得,有很多块--很多变量的内存的指针-,可能有140，000个单词的集合,但是我们不想一行行地列举,140，000行变量。

哈佛公开课 - 计算机科学课程节选