Captain Meriwether Lewis chose a team of 33 people to go with him, including a partner, William Clark.
梅里韦瑟·刘易斯上尉挑选了一支33人的队伍与他同行，其中包括同伴威廉·克拉克wW9)CoA]5cnRN|。
Their journey (or long trip) became known as the Lewis and Clark expedition.
他们的旅程（或长途旅行）成为了人们所熟知的“刘易斯与克拉克远征”&rJQ#R+&+QK*OV3A_oO。
It lasted from 1803 to 1806.
它由1803年持续到1806年8%-GeXGdS_dj。
It was a difficult and dangerous journey into uncharted (or unmapped and unknown) land.
向未知的（或地图上未标明且未被确认的）地区行进是困难和危险的i6g;zzLev^UZK^qu。
The men suffered from disease (or illnesses), hunger, cold weather, and fights against the Native Americans (or American Indians), but only one man died during the expedition.
这些人遭受疾病、饥饿、寒冷天气和对抗美洲原住民（或美国印第安人）的困扰，但只有一个人在远征期间死亡2c|5tP_mJd_。
This is a testament to William and Clark's leadership, or a sign that their leadership was very good and strong.
这是威廉（此处应该是刘易斯）与克拉克领导能力的体现，或表明他们的领导能力很优秀且很强Jtd5b1Ku0[E!NZ;|Z。
Lewis and Clark wrote about everything they did and saw in journals (or small books).
刘易斯与克拉克把他们所做的一切事情及见闻都记在了日记（或小册子）中WCke%yerX6vb9.bzn。
They described many plant and animal species (or types of plants and animals) that no one had seen before.
他们描绘了许多人们之前未曾见过的植物和动物物种（或动植物的种类）,U|RV*@tyVF。
They discovered that the Missouri River did not go all the way to the Pacific Ocean, but they got there anyway.
他们发现密苏里河的尽头不是太平洋，但他们还是到达了那里E~qzwm25hq@[=M。
They established relationships with many Native American tribes (or groups).
他们与许多美国印第安部落（或群体）建立了联系&g*6nLIGrd。
In general, the expedition was a major success and an important source of information for the United States at that time.
总之，这次远征取得了重大的成功并且是美国当时重要的信息来源BbL)Ro;5bBq5.,OA~+。

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