"保护伞"means the power or people that can protect sb. or sth.
例句 Sentences
1、父母就是孩子的保护伞,时刻给孩子温暖。 Fùmǔ jiù shì háizi de bǎohùsǎn,shíkè gěi háizi wēnnuǎn. Parents are their children's protective umbrellas. They give their children warmth.
2、这个贪官原来是这些商人的保护伞。 Zhè ge tānguān yuánlái shì zhèxiē shāngrén de bǎohùsǎn. The corrupt official is the umbrella of the merchants.