立即反应是非常关键的，如使快速运动的机器在很短的可能时间内停顿所产生的问题。
An immediate response is vital when it is a question of bringing fast-moving machinery to a standstill in the shortest possible time.
经过一段时间电活动的再次增加，是伴随快速眼球运动和深的放宽，您的肌肉。
After a time the electrical activity again increases and is accompanied by rapid eye movements and deep relaxation of your muscles.
最近有研究表明，时间短但强度大的运动，会快速增进体能与健康，即便锻炼时间只有几分钟。
Recent studies show that very short but intense exercise rapidly builds and maintains fitness and health, even when the workout is only a few minutes long.
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