它首先检查看返回给用户的内容代表一个错误对象，也就是说它返回一个错误给用户。

It first checks to see whether the content returned to the user represents a fault object, meaning that it is returning an error to the user.

youdao

我没有不断检查看我的队列是否有消息，我提供了一个休眠函数，如没有检索到消息就等待30秒。

Rather than continuously checking to see if my queue has a message, I provide a sleep function that waits 30 seconds in the event that no message was retrieved.

youdao

首先，读一下这个值，我们可以来检查看看是不是正确的类型？

First of all, having read in that value, I can check to see, is it of the right type?

youdao