回归线

例句：

1. 1. The Earth's equator is the line of longitude that connects two continents.
   地球的赤道是连接两个大陆的经线。
2. 2. The Great Wall of China is a great example of man's ability to conquer nature through engineering.
   中国的长城是人们通过工程征服自然的伟大例子。
3. 3. The return of the monsoon brings with it a wealth of natural resources.
   季风的回归带来了丰富的自然资源。