Exercise is especially important in reducing risk of heart disease and stroke.
运动，是降低心脏疾病和中风风险非常重要的一个因素。
A stroke or blow, especially one that produces a sound or serves as a signal.
敲打敲击，吹打，尤用于产生响声或发出信号。
A stroke or blow, especially one that produces a sound or serves as a signal.
敲打敲击，吹打，尤用于产生响声或发出信号。
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