最少的钱用英语怎么说

最少的钱用英语可以说为 "the least amount of money" 或 "the minimum amount of money"。
其来源是 "least" 和 "minimum" 均为形容词，意为最小的，与 "amount" 和 "money" 搭配表示最小的金额。
例句：
He only wants to spend the least amount of money on the trip. 他只想在旅行中花最少的钱。
She is trying to save the minimum amount of money for her future. 她正在试图为未来存最少的钱。