brink

孩子们被警告不要靠近河边的悬崖边缘。

The children were warned not to go near the ___brink of the river cliff.

两国关系紧张，正处于战争的边缘。

The two countries were on the ___brink of war due to escalating tensions.

紧张的气氛把双方推到了冲突的边缘。

The tense atmosphere pushed both sides to the ___brink of conflict.