もぐらなければならない【潜らなければならない】
moguranakereba naranai
1. Must hide; Must submerge
★ Common
Adjective
#823368
1. Must hide; Must submerge
1. I see; that's right
1. mere; simple
1. National League
1. national chain
1. Becoming; After becoming
1. Became; Got
1. Become; Succeed