School closure can also be a reactive measure, when schools close or classes are suspended because high levels of absenteeism among students and staff make it impractical to continue classes.

当有过多的师生缺勤、旷课而不能切合实际地持续上课时，学校因此就要关闭，或者临时停课。 这时，关闭学校也可成为一种反应性措施。

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Reactive powder concrete (RPC), an ultra-high performance concrete, is a great progress of concrete technology, but it is put into practice widely without enough theories.

超高性能混凝土活性粉末混凝土(RPC)的出现是混凝土技术的一大进步，但由于理论研究的缺乏使其未能广泛地应用。

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If the cause for the high platelet count remains unclear, bone marrow biopsy is often undertaken, to differentiate whether the high platelet count is reactive or essential.

如果导致血小板增多的病因不明，则一般会做骨髓活检，以辨别血小板增多是反应性的还是原发性的。

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C-reactive protein is an indication of inflammation in the body, and,at high levels, is considered an early sign of future heart disease.

VOA: standard.2010.03.09

Obese adults can have high levels of C-reactive protein.

VOA: standard.2010.03.09

Companies have insured against turbulence by padding inventories and accepting the high costs of reactive orchestration.

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People with very high C-reactive protein seem to get the most benefit.

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To reach this goal Harvard's Ridker is leading a 15, 000-patient trial testing whether AstraZeneca's statin drug, Crestor, can prevent heart attacks in patients with normal cholesterol levels but high C-reactive protein levels.

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