0ne of them is alone. 其中一头落单了

244. The adults encircle their young.
     成年象已经围成圈在保护小象
245. It's an impenetrable wall of grey.
     这堵灰色皮墙围得非常坚固 很难突破
246. A few exhausted stragglers are still arriving.
     还有一些筋疲力竭的落伍的大象赶了过来
247. 0ne of them is alone.
     其中一头落单了
248. But it's too big for the lions to tackle.
     但是由于它的体型太大了 狮子对付不了
249. This one looks a little smaller.
     这头看起来小一点
250. A solitary lion stands no chance,
     一只单枪匹马的狮子是根本没有办法的

来自《行星地球 第一季 第七集 Planet Earth S01E07 伟大草原》第 247 行