alertness
alertness 英 [ə'lɜːtnəs] 美 [ə'lɝtnɪs]
n. 警戒；机敏
名词复数:alertnesses
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- n. 警戒；机敏
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1. They also increase alertness and energy.
它们也能提高机敏性和精力。
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2. Environmental issues such as noise and level of alertness may interfere with learning new behaviors.
环境问题诸如噪音和警戒的水平也许会妨碍新行为的学习。
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3. When testsubjects at Henry Ford Hospital's Sleep Disorders and Research Center(Detroit, Michigan) did this, their level of alertness jumped 25percent.
亨利·福特医院睡眠障碍研究中心的受试者这么做了以后，他们的机敏程度跃升了25%。
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