primary air quantity 一次风量
Virtually all experts agree that the fee-for-service system—doctors are rewarded for the quantity of care rather than its quality or effectiveness—is a primary reason that the cost of care is so high.
事实上，所有的专家都同意按服务收费的系统——医生的报酬取决于医疗服务的数量，而不是质量或效率——是医疗成本如此高的一个主要原因。
If so, they might do worse than plump for Mitt Romney, a former governor of Massachusetts and a primary candidate last time: a known quantity with what looks like a safe pair of hands.
如果是这样，他们就应该[注2]支持米特·罗姆尼，他是马萨诸塞州的前州长，上一次大选也参加了共和党初选，是大家熟知的竞选人，而且看上去办事牢靠[注3]。
The size of the data quantity is the primary factor in the division.
数据量的大小是决定分割的主要因素。
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