白1 金9 银5 铜6 总21
The Tennis T
#1 The Tennis T
#2 If a doubles team audibly communicates loudly during a point, they forfeit the point.
#3 If an additional ball enters the court while a point is in progress, the point must be replayed.
#4 Rallies on the hard court are longer than the grass but generally shorter than on clay.
#5 The net is 3 feet and 6 inches high at the post and 3 feet high at the center.
#6 The net which is placed at the center of the court, parallel with the baselines, divides the court into two equal parts.
#7 The service lines are 21 feet from the net on each side.
#8 The court is a firm rectangular surface with a low net stretched across the center.
#9 Tennis court is the venue where a tennis match is played.
#10 An estimated 54,250 tennis balls are used during official match.
#11 The grass is cut to a height of exactly 8 mm during the event.
#12 The overall permissible length of a tennis racket is 29 inches.
#13 Every year, 24 tons of strawberries are consumed during Wimbledon.
#14 The fastest serve in men’s tennis came from the racket of Australian player at 263.44 km/h.
#15 Tennis is also an Olympic sport.
#16 A official final once finished in 34 minutes!
#17 The world's oldest tennis court is still in use today.
#18 During a match, a player on average runs 3 miles.
#19 The origin of the tennis term “love” is unknown.
#20 Before yellow tennis balls, they were white.
#21 Catch the ball