这是我们学校曾经建造过的最大的实验室.的翻译：This is the biggest laboratory ever built in our school. 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

This is our school had the largest laboratory ever built.

This is the biggest laboratory ever built in our school.

This was our school has constructed the biggest laboratory.

This is our school had the largest ever built the laboratory.

This is the biggest laboratory ever built in our school.