They have learnt to look for holes in the net. 它们学会了寻找渔网上的破洞

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
258. Why waste energy when food comes to you as easily as this?!
     这么容易就能填饱肚子 何必还费劲捕猎呢
259. As more and more sea lions arrive,
     随着越来越多海狮的到来
260. some change their tactics.
     一些海狮改变了策略

来自《行星地球 第三季 第二集 Planet Earth S03E02 海洋》第 257 行