keen to claim her for their own. 渴望将其占为己有

313. With the males fixed on the female,
     雄雪豹的注意力都集中在了雌雪豹身上
314. the cub has a chance to escape.
     幼崽得以借此机会脱身
315. The males close in on the mother from both sides,
     两只雄雪豹从两侧接近雌雪豹
316. keen to claim her for their own.
     渴望将其占为己有
317. A fight is inevitable.
     决斗在所难免
318. The female moves to escape and protect her cub.
     雌雪豹试图逃跑并保护她的幼崽
319. But the big male follows her.
     但健硕的雄雪豹紧跟着她

来自《行星地球 第二季 第二集 Planet Earth S02E02 山脉》第 316 行