surface and string
地面和管柱
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Pros have always varied their string tension a little based on the court surface, weather conditions and their opponent's style of play.
WSJ: Roger Federer: With Tennis Rackets, He Strings Them Loose
应用推荐
模块上移
模块下移
不移动