航海家第一次到望不到边际的海域里航行是在什么时候,史家没有记载。那是一次只靠日月星辰来辨认方向的最大胆的探险。可是,人们知道星斗可以提供方位信息(bearinginformation)也是经过了若干世纪以后才认识到的。经过观察有人认为,飞离海上饲养场的某些飞禽可以作为寻找大陆的可靠响导,这个意见很快就被航海家们接受了。后来,他们有 When navigators navigated for the first time to the marginal sea, historians did not record them. It was the daring adventure of recognizing the direction by the moon, moon and stars only. However, it has also been known for centuries that people know that stars can provide bearinginformation. After observing that some people fly off the sea farm can be used as a reliable guide to find the mainland, this opinion was soon accepted by navigators. Later, they have