Perhaps this extraordinary pulsation of the clam's fleshy mantle 蛤的肉质外壳的这种非常特别的规律性闪电

48. by head butting.
    相互撞头攻击
49. An electric flash?
    电光灯?
50. No, the display of a file clam.
    当然不是,这是火蛤蜊在表演
51. Perhaps this extraordinary pulsation of the clam's fleshy mantle
    蛤的肉质外壳的这种非常特别的规律性闪电
52. is a warning to frighten away nibbling fish,
    是在警告咬它的小鱼?
53. but no one really knows
    不过真正原因无从知晓
54. And there are snakes here, too, lots of them.
    这里也有蛇 许多的蛇

来自《行星地球 第一季 第九集 Planet Earth S01E09 海洋》第 51 行