一触即发 yī chù jí fā

DEFINITIONS

  1. could happen at any moment
  2. on the verge

CHARACTERS

一 yī
HSK 1
one; a, an; alone
触 chù
HSK 5
butt, ram, gore; touch
即 jí
HSK 4
promptly, quickly, immediately
发 fā
HSK 3
issue, dispatch, send out; hair