do some good

基本解释

The donor's mother wanted to do some good, but the result turned out to be a tragedy for many.
捐赠者的母亲想做一些好事，但是结果对许多人而言却是一个悲剧。
The reform bill, passed by parliament on September 9th, falls well short of what was needed but may nevertheless do some good.
议会在9月9日通过了改革计划的清单，这份清单当然会有一些缺失，但是可以做一些有益之事。
It may do some good in the short term, but in the long term it's not going to solve the problem of invasive species on both sides of the divide.
短期内这也可能有一些好的效果，但长远来看，它不能解决分水岭两侧的物种的入侵问题。

But experts say the medicine could still do some good even if there is a delay.
Some of you are probably good moral individuals and you do not want anybody to be tortured.
你们中有些人可能心地善良,不想让任何人遭到受折磨。
耶鲁公开课 - 死亡课程节选
Because people are going to be getting federal money to do some sort of do-good organizations, feeding the poor, something like that, some sort of helping with social services from a religious framework.
因为人们将会得到联邦资金,成立一些做善事的组织，比如为穷人提供食物，协助从事社会事业,这些都在宗教框架之下。
普林斯顿公开课 - 人性课程节选

So if a flood is going to do some good, this is the time to unleash one.
ECONOMIST: Flooding the Grand Canyon