n the act of signaling by a movement of the hand
v signal with the hands or nod
v move or swing back and forth
v move in a wavy pattern or with a rising and falling motion
v twist or roll into coils or ringlets
v set waves in
a. 波浪状的
1. She was waving at her friends from across the street.
她在街对面向她的朋友们挥手。
2. The teacher was waving her hand to get the students' attention.
老师在挥手以引起学生的注意。
3. I saw him waving goodbye as the train left the station.
我看到他在火车离开车站时挥手告别。