关键作用 guān jiàn zuò yòng

DEFINITIONS

  1. key role; a crucial or vital part or influence in a particular situation or process

CHARACTERS

关 guān
HSK 1
frontier pass; close; relation
键 jiàn
HSK 4
door bolt, lock bolt; key
作 zuò
HSK 1
make; work; compose, write; act, perform
用 yòng
HSK 3
use, employ, apply, operate; use