大满贯 refers to the Grand Slam in sports, particularly in tennis and golf. In tennis, it consists of four major tournaments: the 澳大利亚公开赛 (Australian Open), 法国公开赛 (French Open), 温布尔登 (Wimbledon), and 美国公开赛 (US Open). Winning all four in a single calendar year is a significant achievement for players. In golf, the term also applies to four major championships: the 美国大师赛 (Masters Tournament), 美国公开赛 (U.S. Open), 英国公开赛 (The Open Championship), and PGA锦标赛 (PGA Championship). Achieving a Grand Slam in golf is less common and is celebrated as a remarkable feat in the sport.