envelopes 'envələʊps
释义
n. 信封( envelope的复数形式 )
英文释义
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
词形变化
原型: envelope 原型变体: s3
BNC词频排名: 0 | 当代语料库词频排名: 0