当一个进程收到一个正常终止信号时，它的默认处理方式是忽略这个信号。
The default behaviour of a process which receives a normal exit is to ignore the signal.
对警告应用任何一个(或全部)原则，将很快发现忽略警告的默认处理方式可能是最好的方法。
Apply any (or all) of these to warnings and you'll quickly see that the default action of ignoring warnings is probably for the best.
对于警告，通常默认的处理方式是完全忽略，因为它不会阻止解析和处理过程；或者是弹出一个通知消息并继续解析。
The usual default actions for warnings to completely ignore the warning—since it doesn't prevent parsing and processing—or to issue an informational message and continue on.
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