| 例句 |
The Olympics are held every fourth year.奥运会每四年举办一次。The event, held every four years in Fort Worth, Texas, is the country's leading piano contest.该赛事每四年在得克萨斯的沃思堡举行一次，是该国最重要的钢琴比赛。The United States has a quadrennial presidential election.美国每四年举行一次总统选举。 |