The concept of validity duration of E-cash is introduced in this paper.
提出了电子现金有效期的概念,据此建立了一个有限流通期离线电子现金系统。
A decorative cushion.
垫子装饰精美的垫子
coco(a)nut matting
椰毛编织的垫子，棕垫
A thick cushion used as a footstool or for kneeling.
跪垫，踏脚垫用来踏脚或跪着的厚垫子
The pad on which bobbin lace is made.
花边垫子在其上编织花边的垫子
pipe a skirt, cushion, etc with blue silk
给裙子、 垫子等绲蓝绸边.
to put a pad under a plate
在盘子下面放一个垫子
Put the cushion on the chair please.
请把垫子放在椅子上。
Wipe your shoes on the mat.
在垫子上擦干净鞋子。
A narrow, hard bed or straw-filled mattress.
草垫一种窄的硬床或装满草的垫子
An airtight inflatable pad used as or on a bed or as a cushion.
气垫充气垫子，用作床或放在床上
padding put in cushions and upholstered furniture.
垫子或装软垫的家具内部填充的材料。
a cushion to support the head of a sleeping person.
睡觉的人垫在头下边的垫子。
A mat placed before a doorway for wiping the shoes.
门毯，门垫放在门口用于擦鞋底的垫子
She embroidered the cushion with flowers.
她把垫子绣上了花.
Amy reposed her head on a cushion.
艾米把头靠在垫子上。
She thumped the cushion flat.
她把那垫子捶平了。
There are three fat cats sitting on a mat.
有三只肥猫坐在垫子上。
To place or seat on a cushion.
把…放在或坐在垫子上
