rivalrous

例句：

1. 1. The two teams are fiercely competitive in the championship.
   这两支队伍在锦标赛中竞争激烈。
2. 2. He has a competitive nature that drives him to succeed.
   他具有竞争天性，这驱使他取得成功。
3. 3.The rivalry between the two countries has been ongoing for decades.
   两国之间的敌对关系已经持续了几十年。