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88.Name one of the two longest rivers in the United States.
88.说出美国最长的两条河流中的一条河流的名字。
Answer: Missouri (River); Mississippi (River)
答案：密苏里（河）；密西西比（河）
Explanation: Before there were cars or very good railroads, which are special roads for trains, most transportation in the United States relied on (or used) rivers.
解释：在有汽车或非常好的铁路（火车的专用道路）之前，美国大部分的运输都依赖（或使用）河流。
Using boats on rivers was the fastest way to move people and goods (or products, like food, medicine, and tools) from one place to another.
使用航行在河上的船是将人员和货物（或产品，如食物、药品和工具）从一个地方运送到另一个地方的最快的方式。
The United States has many long rivers that were used for transportation in those early days.
美国在那个年代初期有很多用来运输的长河。
This was especially true for the country's longest river, the Missouri River, and its second-longest river, the Mississippi River.
这对该国最长的河流密苏里河和第二长河密西西比河来说尤为如此，
The Missouri River played an important role (or part) in the exploration of the western United States.
密苏里河在美国西部的探索中发挥着重要作用。
This exploration was an effort to try to learn what the land was like in the West.
这一探索活动的目的是了解西部地区的面貌。
In 1803, President Thomas Jefferson asked Captain Meriwether Lewis to explore the Missouri River and find out whether it could be used to transport (or move) things across North America.
1803年，托马斯·杰斐逊总统要求梅里韦瑟·刘易斯上尉去探索密苏里河，弄清楚它是否可用来将货物运输（或运送）到北美各地。
At that time, no one knew where the Missouri River went, but everyone wanted to find a river that would move things from the east to the west.
在那时，没有人知道密苏里河的流向，但是人人都想找到能把货物从东部运送到西部的河流。
译文为可可英语翻译，未经授权请勿转载！
