head and ears

例句：

1. 3.
   用于表示某事或某人
2. 1.The head and ears of the company arein charge of the marketing department.
   公司的头和耳朵负责营销部门。
3. 2. She wascompletely unaware of the situation.
   她完全不知道情况。
4. 3. He thoroughlycleaned the room before leaving.
   他离开前彻底打扫了房间。