核心差别
defocused 强调defocused 是 defocus 的过去分词，defocus 则侧重defocus 指使光线、图像或注意力从焦点处散开或变得模糊
使用场景对比
| 对比方面 | defocused | defocus |
|---|---|---|
| 核心含义 | defocused 是 defocus 的过去分词，指使某物（如镜头、注意力）失去焦点或变得模糊不清的状态。 | defocus 指使光线、图像或注意力从焦点处散开或变得模糊，常用于光学、摄影或比喻性语境中。 |
| 词性 | 形容词 | 名词 |
| 使用语域 | defocused 常用作被动语态，描述某物被故意或意外地使失去焦点，强调动作的结果状态。 | defocus 常用作及物动词，后接宾语表示使某物散焦；也可作不及物动词，表示自动散焦。在技术语境中，常与设备或参数搭配。 |
对比例句
The photo looks blurry because the camera was accidentally defocused.
这张照片看起来很模糊，因为相机不小心散焦了。
I defocused my eyes to relax after staring at the screen for hours.
盯着屏幕几小时后，我散开视线来放松一下。
I accidentally defocused the camera, so the photo turned out blurry.
我不小心让相机散焦了，所以照片拍出来很模糊。
During the meeting, he defocused from the main topic and started talking about unrelated things.
会议期间，他从主要话题上散开注意力，开始谈论无关的事情。
常见误用提醒
使用 defocused：The camera is defocusing. → The camera is defocused. (defocused 是过去分词，常表示状态或结果，而不是进行时；应使用被动语态或形容词形式来描述散焦的状态。)
使用 defocused：He defocused on the book. → He defocused his attention from the book. (defocused 通常不直接接介词 on 表示动作；正确用法是 defocused something from，表示使某物从焦点上移开。)
使用 defocus：He defocused the problem. → He defocused from the problem. (defocus 作不及物动词时，常与 from 连用表示从某事物散开；直接接宾语可能不自然，应添加介词或调整句型。)