Brazil's new anti-doping lab will test 450 samples daily during the Games.

巴西新的反兴奋剂实验室将在奥运会期间每天测试450个样品。

So Kostic and his crew asked 15 runners who competed in the Boston Marathon in 2015 to provide daily stool samples from a week before the race to a week after.

因此，库斯迪及其团队要求参加2015年波士顿马拉松的15名选手在比赛前后一周提供每日粪便样本。