为了减少每个时间单位内出现头虱症患者的数量，应采取包括治疗所有家庭接触者在内的控制措施。
To decrease the number of head lice episodes per unit of time, control measures should include the treatment of all household contacts.
研究者们旨在探索次原子粒子变成这种状态的方式。 他们的部分尝试是一个一个地去碰可以控制的原子（量子信息的单位）的数量。
Part of that effort comes by bumping up, one by one, the number of quantum bits or "qubits" - units of quantum information - that can be brought under control.
确定测量单位——以测量的术语来表达控制对象，如数量、比率、指数、权数等等。
Define a unit of measure - express the control subject in measurable terms such as quantities, ratios, indices, rating etc.
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