那个律师是个善于边缘政策的人，总是利用法律漏洞为客户谋利。

That lawyer is a ___brinkmanship who always exploits legal loopholes for his clients' benefit.

这位边缘人在桥下生活了五年，靠捡废品为生。

The ___brinkman lived under the bridge for five years, surviving by collecting scrap.