这是你的话题。
Here is a list of things that should be on your review sheet for the exam.The first thing we learned about, the main topic of this unit is about functions of several variables.
这是你们准备考试应该复习的内容，首先我们知道，这个单元的主要内容是多元函数。
When you access your customized portal, the topic you select here is positioned on this page by default.
当访问定制门户时，在这里所选择的主题会被默认放置于此页面之上。
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