备而不用 bèi ér bù yòng

DEFINITIONS

  1. have sth ready just in case
  2. keep sth for possible future use

CHARACTERS

备 bèi
HSK 2
prepare, ready, perfect
而 ér
HSK 3
and; and then; and yet; but
不 bù
HSK 1
no, not; un-; negative prefix
用 yòng
HSK 3
use, employ, apply, operate; use