全职保姆
describes a nanny who works a standard full work week
指工作时间为标准全职工作周的保姆
describes a nanny who resides in the home of their employer
为...当保姆
used to indicate the family or children the nanny cares for
用来指明保姆所照顾的家庭或孩子
...家的保姆
similar to 'for', often used to indicate the family or specific children
与'for'类似，常用来指明所属的家庭或特定的孩子