"The challenge is if certain types of people are doing something, it's difficult for other people to break into it," said Po-Shen Loh, the head coach of last year's winning U.S. Math Olympiad team.

去年获胜的美国数学奥林匹克代表队的总教练罗博深说：“挑战在于，如果某些类型的人正在做某事，其他人就很难成功打入其中。”

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The men's tennis team has shown a big improvement under the supervision of Head Coach Al Wermer.

在总教练阿尔·沃默的监督下，男子网球队取得了很大进步。

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Jenny Allard is the head coach of the Harvard University softball team.

Jenny Allard是哈佛大学垒球队的主教练。

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Pat Summitt became head coach of the women's basketball team at the University of Tennessee in Knoxville in nineteen seventy-four.

VOA: special.2009.03.20

Four years later, as head coach of the women's Olympic team, she led the players to a gold medal win.

VOA: special.2009.03.20

Basketball fans cheered Lakers head coach Phil Jackson as he became the only head coach in NBA history to win ten national championships.

VOA: special.2009.07.10

"The swimmers will be looking to start the Olympic cycle again, " explained head coach Dave Champion.

BBC: SPORT | Other Sport | Davies leads British Euro squad

"Whether or not he is capable of becoming a head coach is questionable, " Lewis told BBC Radio Wales.

BBC: Scarlets ponder Nigel Davies role

Wallwork, 21, was picked by head coach Ian Wright as the perfect partner for 31-year-old Robertson.

BBC: Robertson pairs up with Wallwork