微薄利润：指在销售产品或提供服务时所获得的利润非常小。
... 不充分理由原则 principle of insufficient reason 薄利,微差,不充分的保证 thin margin 不充分的；不完善的 imperfect ...
There was a very, very thin margin between winning and losing this season but that is sport.
本赛季输赢就在非常、非常小的一线间，但是这就是足球。
She is clearly living on a thin margin, and she has not much saving, Zhang came from the same province as you, and she is more than just a staff to you.
她显然正处于生活的边缘，并且她已经没有多少积蓄。张女士与你来自同一省份，对于你来讲，她不仅仅只是一个员工而已。
He pushed his stimulus package through Congress by a wafer-thin margin; the Troubled Asset Relief Programme, money to be used for bailing out Banks, was originally turned down by Congress.
他推进的刺激计划在国会上以少量的票数领先而获得通过，提出用钱注资银行的问题资产救助计划很明显被国会否定了。
After weeks of debate, the state House restored the death penalty by a razor-thin margin: two votes.
The centre-left won the lower house, the Chamber of Deputies, with a wafer-thin margin of the nationwide vote.
He won the election in 2002 by razor thin margin and his appeal was that he related to the common person.