A saint abroad and a devil at home

• 在外是圣人；在家是魔鬼

A saint abroad and a devil at home的用法和样例：

例句

1. Outside the garden is a bus stop.
   花园外是公共汽车站。
2. Leaving home was a terrible wrench for me.
   对我来说离开家是件十分痛苦的事。
3. A geneticist is a specialist in genetics.
   遗传学家是遗传方面的专家。