Intermittent wind tunnel

例句：

1. 1. The rain was intermittent, coming and going throughout the day.
   雨是断断续续的，一天中时有时无。
2. 2.The intermission between plays is intermittently marked by a pause in the action.
   在戏剧之间，暂停时间是断断续续的，用来标记动作的暂停。
3. 3.The intermittent nature of this disease means it can be difficult to diagnose.
   这种病的间歇性质意味着很难诊断。