You can use waitpid() in Linux if you want to just wait infinitely for the process to die.
在 Linux 中，如果您希望无限期等待进程被杀死，则可以使用 waitpid()。
Who is willing to drink the polluted water? It can cause us to be ill and even to die. We can't wait for a moment to protect our water sources.
保持水源清洁污染的水会使人生病甚至死亡，有谁愿意喝这样的水呢？我们要保护水源，刻不容缓。
Show filial piety to parents right now; don't wait until they die.
孝顺父母不要等百年，在世时就要孝顺；
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