1. Though people have often laughed at stories told by seamen, it is now known that many of these ´monsters´ which have at times been sighted are simply strange fish.
    虽然人们常常对水手们讲的故事付诸一笑，但现在看来，人们有时看到的这些"妖怪"很多不过是些奇怪的鱼。

2. Suddenly we heard the commander say "enemy" aircraft had been sighted.
    突然，我们听到指挥官说发现"敌"机。