Photochemical oxidants have been associated with impaired athletic performance in healthy cross-country runners . 光化學(xué)氧化劑一直與健康的越野賽跑運(yùn)動(dòng)員的成績(jī)下降有關(guān)。
英文解釋
across the countryside; "the river runs cross-country"; "the road runs cross-country"
not following tracks or roads; "they liked to race cross-country"
across the countryside; "the river runs cross-country"; "the road runs cross-country"
not following tracks or roads; "they liked to race cross-country"