Nmah
abbr. National Museum of American History 美国国家历史博物馆（华盛顿区）
🗣️ 情景例句
about leaving New York, the family, and friends.
对于离开纽约， 家人和朋友。
I hope you can like the picnic.
我希望你能喜欢这野餐。
Our knowledge of the oceans a hundred years ago was confined to the two-dimensional shape of the sea surface and the hazards of navigation presented by the irregularities in depth of the shallow water close to the land.
100年前，我们只知道海洋是二维平面形的，以及靠近陆地浅水区的深浅不一能给航行带来危险。