sat 是 动词sit的过去式和过去分词

sit 的意思 坐, 坐着, 就座; 使坐下; 使就座; 可坐得下

(SAT) 在美国是指高考 (in the US) a test taken by high school students who want to go to a college or university (the abbreviation for 'scholastic aptitude test')

在英国是标准化考试 (in Britain) the abbreviation for 'Standard Assessment Task'

美国一个城市 San Antonio 圣安东尼奥（马刺主场）简称也是sat