wash out

基本解释

Once, rolling off her and almost falling off the bed, he noticed a smear of period blood that K. had been unable to wash out.
有次结束后他几乎从床上摔下去，他注意到床上的K没洗掉的一点血迹。
But someone had to wash out the hole.
不过总得有人把坑洗干净。
When it's above the horizon, the moon can wash out all but the most intense of displays with its light.
若是月亮尚在地平线上，它的光亮会冲淡一切，这样就只能看到月光了。

There was nothing to wash out -- no mark of any kind -- no blood whatever.
We don't have to worry about how you solve it, but it's problem in mathematics and the answer will be--surprise, it's going to be oscillating back and forth and that'll come out of the wash.
我们没必要去担心这个方程该怎么解,但这个数学问题的答案将会是令人惊讶的,弹簧会来回振荡,问题就迎刃而解了
耶鲁公开课 - 基础物理课程节选
She costs C for sure, that's a wash because B, the way we've worked things out, B was $2, C was $1, So B/2-C is a wash.
她承担C的成本,收益是零,因为B,按我们设定的金额,B是2美元,C是1美元,所以B/2-C是零
耶鲁公开课 - 博弈论课程节选

How this will wash out over the long run isn't clear at the moment.
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