wave goodbye 挥手告别
wave hello 挥手问好
wave a flag 挥舞旗帜
wave hands 挥手
A: Did she see you at the park?
A：她在公园看到你了吗？
B: Yes, she waved at me when I walked by.
B：看到了，我走过去时她向我挥手了。
1) 挥手
2) 波动/起伏
1. 挥动，招手
verb
1. To move your hand to and fro in greeting or to attract attention.
2. To move or cause to move in a wavy motion.