形容词

1. （声音）响亮的，刺耳的，尖厉的
A penetrating sound is loud and usually high-pitched.

2. （目光）锐利的，犀利的，有洞察力的
If someone gives you a penetrating look, it makes you think that they know what you are thinking.

3. （头脑）敏锐的，敏捷的
Someone who has a penetrating mind understands and recognizes things quickly and thoroughly.

1. tending to penetrate
having the power of entering or piercing

e.g. a toxic penetrative spray applied to the surface
a cold penetrating wind
a penetrating odor

Synonym: penetrative

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: acutediscriminatingincisivekeenknifelikepenetrativepiercingsharp