For the fourth straight Olympics, Chinese men have swept the table tennis gold and silver medals in singles.
中国乒乓球队已连续第四次在奥运会乒乓球男子单打项目上摘金夺银。
Sweep做动词有扫去,清除;吹走;挥动;梳(头发)等意思。用在体育运动中,指(在系列比赛中)获得全部胜利,囊括各项冠军(to win all the games in a series of games against another team or all the parts of a contest)。所以,“摘金夺银”就是sweep the gold and silver medals。