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题海无边,若只一味前进,十有八九到不了彼岸．有经验的水手会在适当的岛屿进行补给,以备接下来的航行．一题多解就是题海中常见的补给港,下面以一例为证．
The title of the sea is boundless. If you only go forward, you will not be able to reach the shore. Experienced sailors will replenish the appropriate islands for the next sailing. A solution to the problem is the common supply port in the sea.