他已经将靴子换成了一双牛津浅帮鞋。

He had changed his boots for a pair of Oxfords.

《柯林斯英汉双解大词典》

许多做父母的可能不愿出100块钱买一双鞋。

Many parents may baulk at the idea of paying $100 for a pair of shoes.

《牛津词典》

youdao

And then you realize that you've put on your most expensive pair of shoes this mooring, and if you stop to take them off, it might be too late and the child might drown.

你意识到你正穿着,你最贵的一双鞋，但是，如果你停下来脱鞋，就来不及救这个小孩，小孩可能会溺死。

普林斯顿公开课 - 人性课程节选

and they bought every single one of these guests a pair of new shoes for a party favor.

而且他们给每个参加聚会的人买了一双新鞋。

富家孩子的生日 - SpeakingMax英语口语达人

But then I ask them to think, and in the book I ask the readers to think: Well, have you given a cost of an expensive pair of shoes to save the life of one of the around 9 million children who are dying from poverty related causes each year around the world?

但是，接着我让他们思考，在书中，我让读者思考这样一个问题：,你有没有捐出过买一双鞋的钱,来拯救900万儿童中的一个生命？,他可能正因为贫困导致的种种问题,而生命垂危，每年世界上都会有这样的儿童？

普林斯顿公开课 - 人性课程节选