不失时机

不失時機
bùshīshíjī
  1. to seize the opportune moment
  2. to lose no time

CEDICT

to not let the opportunity slip; to seize the opportune moment; to lose no time

Wiktionary

Entry Composition

1 不失 bùshī still possesses; yet retains (some positive attribute that contrasts with another of its attributes)
2 时机 shíjī opportunity; opportune moment