Number of blocks and total block time: the number of instances and total elapsed time when the thread was in a BLOCKEDstate while invoking a method or service.
阻塞数量和总阻塞时间：在调用某个方法或服务时，处于BLOCKED状态的线程的实例数量和总占用时间。
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The belief is that this creates a state of 'artificial hibernation' that slows the body and blood supply, which gives doctors more time to deal with burst or blocked blood vessels.
Such concerns have blocked new drilling in Alaska's Arctic waters since 2003, despite a steep decline in oil production in the state and intensive lobbying by oil companies.