envelopes

/'envələʊps/

n. 信封( envelope的复数形式 )

n. a flat (usually rectangular) container for a letter, thin package, etc.

n. any wrapper or covering

n. a curve that is tangent to each of a family of curves

原型:envelope

变形:s3

今日更新

更新时间：2026-04-09 22:46:34