Some lab reagents can work decades beyond their best-before date. Plus, the deepest known pit on the Moon seems to lead to a huge underground cave.

中文翻译：

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每日简报：何时应该扔掉过期试剂


有些实验室试剂的使用期限可以比保质期好几十年。另外，月球上已知最深的坑似乎通向一个巨大的地下洞穴。