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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Changing partners simply meant that a satisfactory choice had not as yet been arrived at by one or other of the pair, and by this time every couple had been suitably matched.

简单地说，更换舞伴就是说跳舞的两个人中还有一个没有完全感到满意，到了那个时候，所有跳舞的人就会搭配得很合适了。

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With nanopores, however, virtually no chemical pre-processing is required and no amplification. Instead a single strand of DNA can be read, one base pair at a time, and without the need for labelling.

但是如果用纳米孔，实质上就不需要化学与处理和“放大”，取而代之的是，可以一次一个碱基对地读出单条dna链，也不用标记。

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He went for nought for 92 off 10 overs, fourth on the all-time worst one-day bowling-figure list behind New Zealand's Martin Snedden, and Sri Lanka pair Ashantha De Mel and Sanath Jayasuriya.

BBC: McGrath storms into history books

In the new movie, the glasses become time frames: Oldman has one pair, horn-rimmed, to show that we are in flashback, with Smiley still working for Control, and another, larger pair to make it clear that we have skipped ahead.

NEWYORKER: I Spy

Most of the ideas were pretty marginal--like automatic bowling-pin resetters--but in time the pair settled on a winner: an audio oscillator based on one of Hewlett's old college designs.

FORBES: Great Garages