当(或无论何时等)想做某事时
as / whenever, etc. the fancy takes you
as / whenever, etc. you feel like doing sth
We bought a camper van so we could go away whenever the fancy took us.我们买了一辆野营车,所以我们啥时想去野营就可以去。
释义来自《牛津高阶英汉双解词典》第 9 版