世界的单词怎么写

　　Students come here from the four corners of the world.

　　学生从世界各地来到这里。

　　People are basically the same the world over.

　　世界各地的人基本上都一样。

　　Crude oil is the world's most important commodity.

　　原油是世界上最重要的商品。

　　The map shows the distribution of this species across the world.

　　地图上标明了这一物种在全世界的分布情况。

　　In an ideal world there would be no poverty and disease.

　　在理想的世界里将没有贫穷和疾病。

　　Failing one exam is not the end of the world.

　　一次考试不及格并非世界末日。

　　Which is the largest city in the world?

　　世界上最大的城市是哪个？