察觉出

I can detect signs of improvement in your thinking.

我可以觉你思考问题方面进步。

How did you spot those fifties were counterfeited?

你怎样觉那些50元面值纸币是伪造?

I detected a faint note of weariness in his voice.

我从他中觉倦意。

I soon discerned that the man was lying.

我很快便觉这个人是在撒谎。