Dictionary / Vocabulary / 好機逸すべからず
こうきいっすべからず
make hay while the sun shines
Also written 好機逸す可からず
好機逸すべからず。
Strike while the iron is hot.
好機逸すべからず。この機に一気に仕事を仕上げてしまおう。
This is a golden opportunity we'd be stupid to pass up. Let's get to work and finish it all in one fell swoop.