这种类型的搬运称为河底滚沙。

This type of transport is called saltation.

youdao

在村边将粪便滚埋在沙里或泥土，这是猫的做法。

This is the cat method, where faeces are rolled in sand or dirt next to the village.

youdao

“你应该也来打个滚儿，沙斯塔，”它喷着鼻息，“这是最最振作精神的了。”

"You ought to have one too, Shasta," he snorted. "It's most refreshing."

youdao

However dimly that light came through to you, suffering so acutely from the rough denial of the very existence of American ideals, part of it must have come through American delineation of American characters.

不管遇到何种艰险，哪怕翻山越岭,哪怕趟水滚沙，这些都需要,生动的角色来表现出来。

耶鲁公开课 - 1945年后的美国小说课程节选