Definition: to have a continuous pain that is unpleasant but not strong Level: B2
今天早上我的头真的很疼。
My head really ___aches this morning.
长途徒步之后，我的腿很酸痛。
After the long hike, my legs are ___aching.
因为一整天坐在书桌前，他的背开始疼了。
His back began to ___ache from sitting at the desk all day.
