This is where the river narrows.

这条河就是在这里变窄的。

The river narrows at this point.

此处河面狭窄。

The doctor Narrows his study.

医生缩小了他的研究范围。

Well that narrows the field.

很好，这个缩小了范围。

She Narrows her eyes at me.

她眯缝起眼睛瞅着我。