单词：waving
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
waving的用法和样例：
例句
- After waving her hands casualy,she left.她随意地挥了挥手就走了。
- People were craning out of the windows and waving.人们把头探出窗外挥手致意。
- She was attracted by the waving sea.她被那汹涌起伏的大海吸引。
- Bipolar disorder is a chronic and recurrent psychiatric disorder,which is characterized by waving mania or depression.双相障碍是以起伏性躁狂或抑郁为特征的慢性周期性精神疾病。
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