通常把在立即寻址方式指令中给出的数称为立即数 立即数可以是8位、16位或32位，该数值紧跟在操作码之后。 如果立即数为16位或32位，那么，它将按“高高低低”的原则进行存储。
该体制使用用户智能卡生成一个立即数并使用两种杂凑运算，以改进整个认证体制的安全性能和计算性能。
To improve the whole security performance and reduce the computation cost of this scheme, the individual smart card of a user generates a nonce and executes two kinds of hash operations.
接待的人会立即打开红包，数清里面的钱，然后把金额记录在登记簿上，就记在来宾名字的旁边。
The attendants will open the packets at once, count the money inside, and record it on a register next to the guests' names.
相比于由马车送信需要数星期，一条条信息通过电报站几乎立即就能发送出去。
Rather than taking weeks to be delivered by horse-and-carriage mail carts, pieces of news could be exchanged between telegraph stations almost instantly.
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