蒙胧的英文：
【医】 haziness

The town was just a blur on the horizon
朝地平线望去,小城一片蒙胧

The mountains were hazy in the distance.
远处的山显得雾蒙蒙的。

My vision has grown so hazy.
我的视力已经变得非常模糊。

To make indistinct and hazy in outline or appearance; obscure.
朦胧,模糊使外观或面目模糊不清；晦涩的

The air was thin and crisp, filled with hazy sunshine and frost.
空气稀薄清新，其间日光蒙眬，寒气逼人。

I'm a bit hazy about that.
那件事我不太清楚。