我们可以把这些步骤想象为一次春季大扫除，一年只需要做一次。

Think of the following activity as spring-cleaning that you only need to complete once a year.

youdao

我们可以把这些步骤想象为一次春季大扫除，一年只需要做一次。

Think of the following activity as spring-cleaning that you only need to complete once a year.

youdao