0 Old HSK word(s):
活学活用* *

Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.

活 live, exist, survive / lively
学 learning, knowledge / school
活 live, exist, survive / lively
用 use, employ, apply, operate / use
Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual