Medium intensity exercise can increase the bodys resistance to infection, and the intensive training and competition can lower the bodys immunity.
中等强度运动可增加机体的抗感染能力，而大运动量训练和竞赛可降低机体的免疫力。
Medium intensity exercise can increase the bodys resistance to infection, and the intensive training and competition can lower the bodys immunity.
中等强度运动可增加机体的抗感染能力，而大运动量训练和竞赛可降低机体的免疫力。
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