The penetrating sound of the whistle could be heard from far away.
Able to go through or enter something easily.
The knife was penetrating the thick cardboard.
To go into or through something.
The penetrating of the surface revealed hidden layers.
The act of going into or through something.
ด้วยพจนานุกรมภาพและแฟลชการ์ดที่ทรงพลังฟรี