这部法律一直使用了30年,直到1980年才修改。的翻译：This law has been used for 30 years, until the 1980 modified. 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 law has been used for 30 years, until 1980, was modified.

This law has been used for 30 years, until the 1980 modified.

This law has always used for 30 years, only then revised until 1980.

This law has been used by only 30 years, until 1980.

This law has been used for 30 years, until the 1980 modified.