模式并不会因为本身的简洁而变得不精确——在某些情形下，它们的描述还更准确了——而是它们被概括并忽略了很多不必要的细节。
The patterns are no less accurate for their brevity - and in some cases their descriptions are also more precise - but they are summarised and much of the plumbing detail is omitted.
据估算，每年有四千七百万不必要的抗生素处方被开出，其中绝大多数都是为了使用抗生素治愈病毒性疾病，而病毒性疾病本身对抗生素并不会有任何反映。
It's estimated 47 million unnecessary prescriptions are given out every year - most are for viral illnesses that don't even respond to antibiotics.
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