battle it out

fight or compete to a definite conclusion

战斗到分出胜负

battle royal

(pl. battles royal)a fiercely contested fight or dispute

激战；激烈争论

battle stations

(chiefly US)the positions taken by military personnel in preparation for battle (often used as a command or signal to prepare for battle)

(主 美)战斗岗位（常用作备战指令或信号）

half the battle

an important step towards achieving something

成功的重要一步

he never gives in, and that's half the battle.

他从不认输，这就成功了一半了。