n. 印象；观感（impression的复数）

n a vague idea in which some confidence is placed

n an outward appearance

n a clear and telling mental image

n a concavity in a surface produced by pressing

n a symbol that is the result of printing or engraving

n all the copies of a work printed at one time

n (dentistry) an imprint of the teeth and gums in wax or plaster

n an impressionistic portrayal of a person

n the act of pressing one thing on or into the surface of another