adj.无敌的;无对手的;无双的;无比的;
例句:
This achievement in scientific research is absolutely unrivalled.
这项科研成果举世无双.
In the sixties he was unrivalled in literary circles.
他在60年代独步文坛.
He was an unrivalled talent, but unfortunately at the wrong time.
他是个旷代奇才, 可惜生不逢时.