Temporal hours, which were first adopted by the Greeks and then the Romans, who disseminated them through Europe, remained inusefor more than 2,500 years.
计时法最初由希腊人采用，后来由罗马人在欧洲传播，至今已使用了2500多年。
2
Some of these techniques have been inusefor years.
有些技巧已经应用了多年。
3
Programs to process the data have been inusefor several years.