The act or fact of doing something.

行动或事实。如：enforcement 强制；infringement 侵犯。

The condition or state resulting from an act.

行动后的情形或状态。如：excitement 兴奋；retirement 退休。

Means or instrument.

方法或工具。如：adornment 装饰。

A concrete result or outcome of an action.

行动的结果。如：attachment 附着物；pavement 铺设后的路面。