他在跨栏比赛中碰倒了第三个栏架
He knocked over the third ___hurdle during the race.
她在训练中轻松跨过了所有障碍。
She ___hurdled all the barriers easily during practice.
他在跨栏比赛中轻松跳过了所有栏杆。
He easily jumped over all the ___hurdles in the race.
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