on the edge

基本解释

All the frogs line up on the edge of a rock to dive.
所有的青蛙在一块石头边上排起了队来潜水。
In reality, your brain operates on the edge of chaos.
在现实中，你的大脑在混乱的边缘运算着。
They are camped once more around government buildings on the edge of the Kasbah.
他们再次在位于北非要塞边缘地带的政府建筑周围宿营。

There is literally concrete evidence of their work." Tony Hawk says skateboarding was once a sport on the edge of society.
Once you know what pieces to look for, what mental constructs to reach for, can you realize all right I want to make some dancing figures go back and forth, I need to loop this way and loop this way and check if I'm on the edge and so forth.
一旦确定需要查找的部分,想要达到那种层次，你是否意识到,我想做出一些可以来回走动跳舞的人，我需要按这种方式那种方式让它转圈,并检查我是否,到了屏幕的边缘等等。
哈佛公开课 - 计算机科学课程节选
Another example is at the very opening of the book: The train was racing through treetops that fell away at intervals and showed the sun standing very red on the edge of the farthest woods.
在书的最开头还有一个例子：,“在树林中，火车疾驰，若隐若现,时不时地露出远方树林,边缘的火红的夕阳,一旁是弯弯曲曲。
耶鲁公开课 - 1945年后的美国小说课程节选

Buying farmland on the edge of big cities would have been an even better play.
FORBES: Perspectives