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来源：雅诚德英语网
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.
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.
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。