“频繁地”用英语怎么说？

一辆区间公交车频繁地往返于这家旅馆和那个乡村俱乐部。A shuttle bus runs frequently between the Inn and the Country Club.我们频繁地提到了他的观点。We have referred freely to his ideas.两个人都在背地里频繁地互相攻击。Both men continually bad-mouthed each other....