Diana～蜜桃
Tennis is a game played between two players (singles) or between two teams of two players (doubles). Players use a stringed racquet to strike a hollow rubber ball covered with felt (most of the time yellow, but can be any color or even two-tone) over a net into the opponent's court. Tennis is played on a rectangular, flat surface, usually grass, clay, or a hardcourt of concrete and/or asphalt. The court is 78 feet (23.77 m) long, and its width is 27 feet (8.23 m) for singles matches and 36 ft (10.97 m) for doubles matches.[20] Additional clear space around the court is required in order for players to reach overrun balls. A net is stretched across the full width of the court, parallel with the baselines, dividing it into two equal ends. The net is 3 feet 6 inches (1.07 m) high at the posts and 3 feet (914 mm) high in the center. 网球是一项隔着球网、用球拍击打橡胶制空心球的运动。网球起源于英国，最早流行于英语国家的上流社会。网球分单打和双打。乒乓球起源于网球。 网球比赛在一个长方形的场地上进行。网球场地上用白线划出界线。标准网球场的长度是23.77米（78英尺）。单打比赛的球场宽度定为8.23米（27英尺），双打比赛则为10.97米（36英尺）。球场左右两旁的线则相应地称为“单打边线”或“双打边线”。球场两端的白线称为“底线”。两条底线的中间标有短小的中界点。球场周围必须留出空间。 球网与球场的底线平行，穿越整个球场，将球场分为相等的两部分，因此球网与两条底线的距离各为11.89米（39英尺）。球网两端悬挂在两边的网柱上。网柱中心在双打边线外的91.4厘米（3英尺）处。球网在网柱处的高度为1.07米（3英尺6英寸），在球场中央的高度则是91.4厘米（3英尺）。球网顶部用白色网边布包缝。
Rita泱泱
Tennis is a game played between either two players ("singles") or two teams of two players ("doubles"). Players use a stringed racquet to strike a hollow rubber ball covered with felt over a net into the opponent's court. Originating in Europe in the late 19th century, tennis spread first throughout the English-speaking world, particularly among the upper classes. Tennis is now once again an Olympic sport and is played at all levels of society, by all ages, and in many countries around the world. Except for the adoption of the tie-breaker in the 1970s, its rules have remained remarkably unchanged since the 1890s. Along with its millions of players, millions of people follow tennis as a spectator sport, especially the four Grand Slam tournaments.
zhang太太
In English:Tennis is a beautiful and intense movement, the origin and development of tennis can be summarized with four points: bred in France, was born in England, began to spread and reach a peak in the United States, is now popular all over the world, known as the world's first two great ball games.翻译过来：网球是一项优美而激烈的运动，网球运动的由来和发展可以用四句话来概括：孕育在法国，诞生在英国，开始普及和形成高潮在美国，现在盛行全世界，被称为世界第二大球类运动。
80年代之后
Tennis is a sport played between two players (singles) or between two teams of two players each (doubles). Each player uses a strung racquet to strike a hollow rubber ball covered with felt over a net into the opponent's court.The modern game of tennis originated in the United Kingdom in the late 19th century as "lawn tennis" which has heavy connections to various field/lawn games as well as to the ancient game of real tennis. After its creation, tennis spread throughout the upper-class English-speaking population before spreading around the world. Tennis is an Olympic sport and is played at all levels of society at all ages. The sport can be played by anyone who can hold a racket, including people in wheelchairs. In the United States, there is a collegiate circuit organized by the National Collegiate Athletic Association.The rules of tennis have changed very little since the 1890s. Two exceptions are that from 1908 to 1960 the server had to keep one foot on the ground at all times, and then the adoption of the tie-break in the 1970s. A recent addition to professional tennis has been the adoption of electronic review technology coupled with a point challenge system, which allows a player to challenge the line (or chair) umpire's call of a point.Tennis enjoys millions of recreational players and is also a hugely popular worldwide spectator sport, especially the four Grand Slam tournaments (sometimes referred to as the "majors"): the Australian Open, the French Open, Wimbledon, and the US Open.
sophialili
Tennisisagameplayedbetweeneithertwoplayers("singles")ortwoteamsoftwoplayers("doubles").Playersuseastringedracquettostrikeahollowrubberballcoveredwithfeltoveranetintotheopponent'scourt.OriginatinginEuropeinthelate19thcentury,tennisspreadfirstthroughouttheEnglish-speakingworld,particularlyamongtheupperclasses.TennisisnowonceagainanOlympicsportandisplayedatalllevelsofsociety,byallages,andinmanycountriesaroundtheworld.Exceptfortheadoptionofthetie-breakerinthe1970s,itsruleshaveremainedremarkablyunchangedsincethe1890s.Alongwithitsmillionsofplayers,millionsofpeoplefollowtennisasaspectatorsport,especiallythefourGrandSlamtournaments
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