It's impossible to translate this exactly, you'll never fully appreciate the piece.
这篇文章不可能准确翻译,所以你也许永远不可能好地阅读它。
There has long been a superstition among mariners that porpoises will save drowning men by pushing them to the surface, or protect them from sharks by surrounding them in defensive formation.
长期以来,海员中流传着一种迷信的说法,认为海豚会把快要淹死的人托到水面,救人性命;或在人们周围列队保护,使他们免遭鲨鱼伤害。