If you are not sure why, you might try making a separate copy of this function for each interrupt type that you catch and see what causes the extra calls.
如果想细究其原因，可以尝试针对每种终止类型获得该函数的单独副本，研究产生额外调用的原因。
2
The more responsible sites will quickly catch these errors and correct them, but without the expert eye of a trained copy editor, sometimes they can still go overlooked.
负责任的站点会在发现错误后马上改正，但也难免有漏网之鱼。
3
So it's not just, you can swing by 11:04 and grab a copy and go off and catch some more sleep.