Its three-wheel design exempts it from onerous federal testing regulations.
它的三轮设计使它不用再受繁杂的联邦机动车测试规定的约束。
By virtue of the TUE, Biles has not broken any drug-testing regulations, including at the Olympic Games in Rio, USA Gymnastics said.
美国体操协会表示，根据TUE的规定，包括在里约奥运会期间，西蒙·拜尔斯也没有违背任何有关药物测试的规定。
By virtue of the TUE, Biles has not broken any drug-testing regulations, including at the Olympic Games in Rio, USA Gymnastics said.
美国体操协会表示，根据TUE的规定，包括在里约奥运会期间，西蒙·拜尔斯也没有违背任何有关药物测试的规定。
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