sail across the ocean meaning in English

漂洋过海

Could not any other seaman sail across the ocean just as he has done ?
难道别的水手就不能象他那样横渡大洋吗？
The wavy ocean symbolizes that the world is full of problems ; while the boat sailing across the ocean symbolizes that although we live in this world , we do not belong here
呈波浪形态的海表示世界并非风平浪静，它充满著各式各样的问题，而船在海上表示我们在世而不属世。
In their small ship , and without sufficient food , they just sailed across the ocean on a seemingly uncertain course . in fact , columbus had already seen everything in a dream
那个时候他们那艘小小的船，不够食粮，一直在海上航行，似乎没有一个确切的方向，但事实上哥伦布已经事先在梦里看到了。