保驾护航

(idiom) to safeguard (sth) / to protect (sth)

Bulgaria / Bulgarian / abbr. for 保加利亞|保加利亚[Bao3 jia1 li4 ya4]

to defend; to protect; to keep / to guarantee; to ensure / civil administration unit in the baojia 保甲[bao3 jia3] system (old)

(in former times) to escort the emperor (or other important personage) / (nowadays) to escort sb (usually jocular)

surname Jia

to harness / to draw (a cart etc) / to drive / to pilot / to sail / to ride / your good self / prefixed word denoting respect (polite 敬辭|敬辞[jing4 ci2])

to protect

a naval escort / to convoy

boat / ship / craft / to navigate / to sail / to fly