时不再来 (shí bù zài lái) | Meaning: Time that has passed will never come back. (idiom) | Chinese Idiom with Pinyin & Origin

No time to lose! (idiom)机不可失jī bù kě shī

(idiom) time and tide wait for no man时不我待shí bù wǒ dài

urgent · emergency紧急jǐn jí

(idiom) an opportunity that someone (usually a villain or adversary) can exploit可乘之机kě chéng zhī jī

Time that has passed will never come back. (idiom)