The Potomac Indians paddled their canoes down the river till they came to a much broader piece of water.

波托马克的印第安人划着独木舟顺流而下，直至来到一片更开阔的水域。

A " strait" (strait) is a narrow piece of water that connects two larger bodies (or two larger sections) of water.

“海峡”（海峡）是连接两个较大水体（或两个较大部分）的狭窄水域。

This piece of water was so big it seemed to them like the ocean, and they called itthe Mother of Waters, which in their own language was Chesapeake.

这片水域很大，他们觉得就像海一样宽广，于是他们管它叫河之母，用他们的语言说就是切萨皮克。

There we had a delightful swim in the broad piece of water above the lock, where the river looked much bigger than its natural size from its being dammed up by the weir.

在那里，我们在船闸上方宽阔的水域中愉快地游泳，那里的河流看起来比它的自然大小要大得多，因为它被堰堵住了。

A " canal" is a long, narrow piece of water that is created by humans to connect two other bodies of water: two oceans or two lakes, or a river and an ocean.

“运河”是人类创造的一条狭长的水域， 用于连接另外两个水域：两个海洋或两个湖泊， 或一条河流和一条海洋。

During the rains when this piece of water gets connected with the river, and boats can come through, great quantities of cotton yarns, and woollen stuffs for the coming winter, are brought in for sale.

每当下雨，这片水域与河相连，船只可以通过时，大量的棉纱和来年冬天的毛织品被运来出售。