معنی grabs his chance with both hands.

grab it with both hands" is correct and usable in written English. You can use this phrase when referring to an opportunity

, meaning that you should take advantage of it or seize it

مثلا میگیم شانس در خونتو   زده پس دو دستی بچسبش

از موقعیتی که برامون پیش اومده بیشترین بهره رو بردن