三个方面用英语翻译为：Three aspects。

aspects：n.方面;层面;样子;外观;外表;朝向;方位；

aspect的复数

Non-conformities occur during construction are specifically defined in three aspects including quality, safety and environmental protection.

施工过程中产生不符合具体按质量、安全和环保三方面界定。

He showed us aspects of the game that we had never seen before.

他向我们展示了这一运动不为我们所知的那些方面。

The technical aspects were the concern of the Army.

技术方面由陆军负责。