house-sitting       
noun [ U ] uk/ˈhaʊsˌsɪt.ɪŋ/ us/ˈhaʊsˌsɪt̬.ɪŋ/
 (房主不在时)替人照看房子
the act of staying in someone's house while they are away in order to keep it safe
  She did some house-sitting for a friend earlier this spring. 今年春天早些时候,她为一个朋友在外出时照看房子。 
 He takes house-sitting jobs when he can. 他一有机会就去替人在外出时照看房子。 
 See: house-sit
 - More examples
 - I used to do house-sitting and dog-walking.
 - House-sitting can be an ideal way for a writer to earn a little extra money.
 - She runs an emergency cooking and house-sitting service for the neighbourhood.