这项环境保护法案的通过花费了议会六个月的时间。

The ___enactment of the environmental protection bill took six months in parliament.

学生们对这个历史事件的表演非常生动。

The students' ___enactment of the historical event was very vivid.

这项新法规将于下个月正式生效。

The new ___enactment will take effect next month.