本領 proper province●sphere

本領を発揮させる〔人の〕 tap someone's potential

本領を発揮して at one's best●in one's element

本領を発揮する come back to life●come into one's own●come to life (again)●display one's real ability●find one's feet [legs]●hit [strike] one's stride●show one's real ability●show one's stuff●show oneself at one's best

本領外で out of one's element

本領収証 formal receipt