Friend , let me ask you this: if you could give someone you know or even a total stranger a $100 gift and get back $400, would you do it?

• 朋友，现在问你一个问题：如果你拿出100美元的礼品赠给某个你不认识的陌生人，你却可以得到400美元回赠，你愿意吗？