Children have higher Anaerobic Thresholds, which suggested that intensities higher than 80% of maximal heart rate are necessary to expect a significant improvement in fitness.是什么意思_Children have higher Anaerobic Thresholds, which suggested that intensities higher than 80% of maximal heart rate are necessary to expect a significant improvement in fitness.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句