It's no bigger than a ping-pong ball. 它的体型还没有乒乓球大

255. It lives only here,
     它只生活在
256. where the sand grains are so perfectly dry and polished,
     沙粒干燥光滑的地区
257. that they flow almost like water.
     让它们可以如流水般行动自如
258. It's no bigger than a ping-pong ball.
     它的体型还没有乒乓球大
259. A golden mole.
     一只金毛鼹鼠
260. It's totally blind,
     它的视力已完全退化
261. but there's nothing to see underground anyway.
     但地下本来也没有什么可看的

来自《行星地球 第二季 第四集 Planet Earth S02E04 沙漠》第 258 行