这种手机壳是防止屏幕碎裂的很好保护装置。

This phone case is a good ___protector against screen cracks.

法院指定她的叔叔作为她财产的法律保护人。

The court appointed her uncle as the legal ___protector of her property.

这位护国公在动荡时期维持了国家的稳定。

The Lord ___Protector maintained the country's stability during turbulent times.