This scheme that is constructed based on elliptic curve with one-time pair of keys has the merits of security, efficiency, smaller key and easy realization.

该方案是基于椭圆曲线，采用一次一密签名构造的，具有安全性高，速度快，密钥量小，便于实现等优点。

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The Black Satellites have battled through some adversity to reach the final, edging South Africa in extra time in the first elimination match, and surviving a pair of exciting 3-2 games that came down to the wire in the quarter and semifinals.

VOA: standard.2009.10.15

A covalent bond is any time we have a pair of electrons that is shared between two different atoms.

所谓共价键就是我们有两个原子,共用一对电子。

麻省理工公开课 - 化学原理课程节选

to make sure that it's going to be a comfortable pair of shoes that last me a long time.

来保证这双鞋很舒服而且可以穿很久。

不需要名牌 - SpeakingMax英语口语达人

This was the second time the pair have clashed and the second time Valuev has beaten Ruiz on points.

BBC: Valuev beats Ruiz to take crown

It will be the first time the pair have worked together since the 1993 movie, for which Hunter won the best actress award.

BBC: Holly Hunter and Jane Campion to reunite for BBC drama

But the next time that pair linked up, King was not to be denied, leaping superbly above Shaun Ainscough to catch and touch down.

BBC: Warrington 16-8 Wigan