Built-in Date Math Function.

内置的日期数学函数。

youdao

It has a rich library of built-in functions to boost your productivity for commonly required operations, such as date and time math, string manipulation, and so forth.

它拥有丰富的内嵌功能库，用于提高您的通常所需的操作的生产力，例如日期和时间计算、字符串处理，等等。

youdao