There are children who by a relatively modest donation to an effective aid agency, you could save their lives.

要拯救这些儿童的生命,只需要你向比较有效的救助机构,捐赠适量的钱款。

普林斯顿公开课 - 人性课程节选

He points out that it's estimated that for every $3 you send to UNICEF, you can save a life.

他指出,据估计,你给联合国儿童基金会每寄去3美元,就能救助一个人的性命

耶鲁公开课 - 金融市场课程节选