A necessary and sufficient condition of the existence of prime model is proved.

研究了主型的有关性质，证明了一个素模型存在的充分必要条件。

youdao

Communicative polymer is a sentence transformation that keeps the content unchanged in a prime model sentence.

转换聚合体则是保留原始模型句内容不变的句子转换。

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When a practical goal is involved, however, Benjimin Franklin may best be regareded as a role model in this respect and asking people for advice often turn out to be the prime alternative.

但是，当涉及实际目标时，本杰明·富兰克林可能会被视为这方面的榜样，而向人们征求意见通常被证明是最佳选择。

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Prime Minister Singh called President Obama a "role model for billions and billions of people" around the world.

VOA: standard.2010.06.27

Prime brokerages use its VAR model to set margin requirements for hedge fund clients.

FORBES: Risks

It is continuing on the Keynesian "spend, spend, spend" model, hoping to prime the pump.

BBC: Martha Kearney's week

Blair's largely successful two-and-a-half term run as Britain's prime minister should serve as a model for President Obama.

FORBES: Political Economy