数以百年前，地球上就已经有生命了。的翻译：A century ago, there has been life on Earth. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Hundreds of years ago, life on Earth has had.

A century ago, there has been life on Earth.

The number by hundred years ago, on Earth already had the life.

for 100 years ago, life on earth has already had.

A century ago, there has been life on Earth.