机不可失，时不再来 (機不可失，時不再來) jī bù kě shī, shí bù zài lái

jī bù kě shī, shí bù zài lái phrase Opportunity knocks but once.
Domain: Proverb 谚语 , Subdomain: , Concept:
Notes: (CC-CEDICT '機不可失，時不再來')