我太太和我要庆祝一下我们的结婚五周年。

My wife and I are celebrating our fifth anniversary.

同时鼓励公约各缔约方采用国家论坛形式开展五周年纪念活动。

Parties to the Convention are also encouraged to mark the fifth anniversary in national forums.

值此五周年之际，我们要庆祝公共卫生界取得的这一巨大成就。

As we mark this fifth anniversary, we are celebrating a true triumph for public health.