encircles the shoal. 将鱼群包围

251. But the anchovy shoal has already been located...
     但这里的凤尾鱼群已经被发现了
252. ..by the planet's most efficient hunters.
     被地球上最高效的捕猎者捷足先登
253. A net, over half a mile long,
     一张近1公里长的渔网
254. encircles the shoal.
     将鱼群包围
255. It can trap over a million fish.
     它能捕获超过一百万条鱼
256. But the sea lions aren't about to go hungry.
     但这些海狮是不会空着肚子的
257. They have learnt to look for holes in the net.
     它们学会了寻找渔网上的破洞

来自《行星地球 第三季 第二集 Planet Earth S03E02 海洋》第 254 行