船行了一小时，远处看到黄黄的一大片水域。
After sailing for one hour, we saw a big expanse of yellow water somewhere far away.
他们走了将近两个小时时，他们来到了一大片水域前。
They had been walking for nearly two hours when they came to a large sheet of water.
如果你游泳不好，但你需要游过一大片水域，你可以用裤子作为漂浮。
If you can't swim well but you need to cross a large body of water, you can use your pants as a flotation device.
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