translation.en: Every old curator who'd been in that museum had seen this wonderful specimen, put their hand in the jar, pulled it out and thought, "Wow, look at that," plop, dropped it back in the jar, contaminating this specimen.
translation.zh: 那座博物馆的每一位老馆长， 都看到了这个奇妙的标本， 他们把手伸进罐子里，把它拽出来，心想: ”哇，瞧瞧这个”，啪，又把它扔回罐子里了。 这样他们就把这个标本污染了。