battle (/fight) it out;decide (/see) who is the stronger; force (/call for)a showdown; have it out (with sb); wage a decisive fight (/battle)
? 他們將在下一次選拔賽中～。They will battle it out in the coming selected trial.
? 愿與漢王挑戰(zhàn)決雌雄，毋徒苦天下之民父子為也。(《史記·項羽本紀》) Let’s settle the issue now by hand-to-hand combat instead of involving all these other men.
一決雌雄yī jué cí xiónɡ
雌雄：比喻勝負，高低。一決勝負、比出高低上下。fight it out, decide who is the stronger, have it out, fight a decisive battle