plunge into the commercial sea

• 下海

plunge into the commercial sea的用法和样例：

例句

1. It's time for swimming in the Baltic Sea.
   在波罗的海到了下海游泳的季节了。
2. Even in the dirtiest weather, poverty drove us to go out to sea.
   由于贫穷，最坏的天气我们也不得不下海。