1 (used about an opinion, an argument, etc) showing only one point of view; not balanced （指意见、论点等）片面的，偏颇的: Some newspapers give a very one-sided view of politics. 有些报纸发表很片面的政治观点。

2 (used about a relationship or a competition) not equal （指关系或比赛）不平衡的；实力悬殊的: The match was very one-sided -- we lost 12-1. 这场比赛双方实力很悬殊，我们以12比1落败。