They're part of a new form of the sharing economy: an online group of house sitters.

他们是共享经济新形式的一部分：一个在线家庭保姆群体。

The couple has a high success rate in getting accepted as house sitters and they always go beyond the homeowner's expectations.

这对夫妇在被接受为保姆方面有很高的成功率，他们总是超出房主的期望。