at the edge of

The water flows into the ditch at the edge of the rice field.

水从稻田边流进沟里。

At the edge of a sprawling grassland, a pair of hoofed grazers resembling horses, an antelopelike notoungulate and a ground sloth feed quietly, oblivious to their impending doom.

在辽阔草原的边缘，有对貌似马儿的有蹄草动物、很像羚羊的南方有蹄类地獭正在静静觅，没有注意到大祸头。

In the early 20th century, Qing dynasty carried out a series of social reformational policies in order to remedy its political power being at the edge of perdition.

20世纪初，清王朝为了挽救濒灭亡的命运，推行了系列的社会改革措施。