1. 有识别力的;有鉴赏力的;敏锐的
Someone who is discriminating has the ability to recognize things that are of good quality.

1. showing or indicating careful judgment and discernment especially in matters of taste

e.g. the discriminating eye of the connoisseur

2. having or demonstrating ability to recognize or draw fine distinctions

e.g. an acute observer of politics and politicians
incisive comments
icy knifelike reasoning
as sharp and incisive as the stroke of a fang
penetrating insight
frequent penetrative observations

Synonym: acuteincisivekeenknifelikepenetratingpenetrativepiercingsharp