Your small blood vessels (capillaries) will widen to deliver more oxygen to your muscles and carry away waste products, such as carbon dioxide and lactic acid.
毛细血管扩张把更多氧气送入肌肉中并带走排泄物，如二氧化碳和乳酸。
Your small blood vessels (capillaries) will widen to deliver more oxygen to your muscles and carry away waste products, such as carbon dioxide and lactic acid.
毛细血管扩张把更多氧气送入肌肉中并带走排泄物，如二氧化碳和乳酸。
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