图片提供：美国国家历史博物馆。
美国国家历史博物馆近日宣布，发现了亚伯拉罕·林肯的怀表中深藏已久的信息。
A long-hidden message was discovered inside Abraham Lincoln's pocket watch, the National Museum of American History announced recently.
喜欢烹饪的人们正在华盛顿特区史密森尼博物院的美国国家历史博物馆参观一个展览。
People who love to cook are enjoying a new exhibit at the Smithsonian Institution's National Museum of American History in Washington, D. C .
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