鳄鱼流眼泪，是在伤心吗？

Crocodiles do cry, but not from sadness. 鳄鱼确实会流泪，但不是伤心。 They have extra salt to get rid of. 它们身体里，多余的盐要排出去。 The tears wash the salt out of their eyes. 眼泪，就是从眼睛里排盐。 So the tears are just salt water. 所以那泪，其实是盐水。 It looks like crying, but its heart is cold. 看着像哭，心却是狠的。 That is why crocodile tears mean fake sadness. 所以鳄鱼的眼泪，说的就是假慈悲。