一旦发现她认为会是美味的点心的东西，她就会锁定它，等待它足够接近，然后突然之间猛扑过去。
As soon as she saw something which she thought might make a tasty snack, she would lock onto it, wait until it came close enough, and then suddenly pounce.
请记住，在有了有效消息句柄之后，SQS会锁定它。
Keep in mind that once you have a handle to a valid message, SQS locks it.
如果独占访问请求的资源没有被锁定，则这个方法锁定它。
If a request for exclusive access to the resource is unlocked, this method locks it.
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