拜师

拜师	bài shī	to formally become an apprentice to a master
拜	bài	to bow to; to pay one's respects / (bound form) to extend greetings (on a specific occasion) / to make a courtesy call / (bound form) (of a monarch) to appoint sb to (a position) by performing a ceremony / to acknowledge sb as one's (master, godfather etc) / (used before some verbs to indicate politeness)
师	Shī	surname Shi
师	shī	teacher / master / expert / model / army division / (old) troops / to dispatch troops