chair-umpire
常见例句
- Becoming a chair umpire at top events takes years of officiating lower-tier matches, attending seminars, passing written tests and undergoing evaluation after evaluation--plus some luck.
FORBES: Magazine Article - The chair umpire at the U.S. Open has the best seat in the house--especially if there's yet another epic Rafael Nadal-Roger Federer final.
FORBES: How To Become A Chair Umpire 返回 chair-umpire