that contains vital minerals scarce in their natural diet. 而这种矿物质很难从自然食物中获取

251. To get what they seek the prospecting elephants must first blow away the covering layer of silt.
     要找到想要的东西 大象首先要驱走覆盖着的沙土
252. Satisfaction at last.
     最终十分满意
253. They're collecting a particular kind of clay
     它们在收集一种特殊的矿物质
254. that contains vital minerals scarce in their natural diet.
     而这种矿物质很难从自然食物中获取
255. It may be mud, but there's just nothing quite like it for enriching the blood.
     虽然有些牙碜 不过到了血液里也就没什么了
256. The clay also helps to absorb the toxins found in many leaves that the elephants eat.
     粘土也可以吸收中和吃的叶子中的毒素.
257. There are other benefits to coming here.
     到这里还有个好处

来自《行星地球 第一季 第八集 Planet Earth S01E08 热带雨林》第 254 行