scratch-off

基本解释

Hewlett-Packard runs the computer system and found a cheap way to print the scratch-off labels.
Hewlett-Packard经营着这个计算机系统，并且已经找到了一种廉价的方式印制粘贴标签。
Three of her wins, all in two-year intervals, were by scratch-off tickets bought at the same mini mart in the town of Bishop.
其中三次大奖都刚好间隔两年，都是一张她从同一个主教镇小超市里买来的刮刮乐彩票。
The scratch-and-win specialist marks the keys with printed codes and covers them with a special scratch-off layer (thermochromatic or other security inks could be used).
刮奖专家以印好的编码作为标记，并在上面覆盖一层可以挂掉的特殊涂层（可以使用热变色油墨或其他安全油墨）。

Under Mr Simons' scheme, which is being implemented in Nigeria and Ghana, a scratch-off panel on the packaging reveals a code which can be texted to a special number to verify that the drugs are genuine.
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But for customers who want something truly special, 3x1 will create a one-off trouser completely from scratch.
FORBES: Magazine Article
Scratch off those hard to find and expensive items like Wii gaming consoles and big flat-panel screens.
FORBES: Magazine Article

a small card that you can buy to try to win a prize, with a thin layer that you rub off in order to see if you have the winning numbers on it