河流卫士通过定期行走一段河流的河岸来看护河流。

River guardians look after a river by regularly walking a stretch of riverbank.

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事实上，美国河流的倡议组织提出了美国几条最珍惜的河流已经列在了年度最危险的河流名单上。

In fact, several of the nation's most cherished waterways have landed on the annual most Endangered Rivers list produced by the advocacy group American Rivers.

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世界上危险最小的河流是那些流域人口最少的河流。在北极地区和相对人迹罕至的热带地区，河流看来是最健康的。

Rivers in arctic regions and relatively inaccessible areas of the tropics appear to be in the best health.

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Suddenly, looking through the optic glass, one could see valleys, it seemed to have rivers, and there were mountains.

突然，通过厚厚的玻璃，我们可以看见，月亮上似乎有河流，高山。

耶鲁公开课 - 弥尔顿课程节选

Maybe on the campus tour they kept you away from this part of the campus, but if you go over to the east close to the river there is a building called "the library."

可能在校园旅游的时候，他们故意让你们远离,校园的这个部分，但是如果你们到达东区，接近河流的地方,有一座建筑物，叫图书馆“

麻省理工公开课 - 固态化学导论课程节选

This made me think of Mississippi Gene too and as the river poured down from mid America by starlight I knew, I knew like mad, that everything I had ever known and would ever know was One.

这又使我想起密西西比的吉恩,以及河流从美国中部倾斜而下的景象，我知道是很疯狂地，很疯狂地同样也有，我发现所有我知道或未知的事都是一体。

耶鲁公开课 - 1945年后的美国小说课程节选