动 wave，wield，wipe off，command，brandish ；

[例句] 埃米举起胳膊挥挥手。“再见，”她喊道。 Amy lifted her arm to wave. "Goodbye," she called.

[例句] 她挥了挥拳头，“我要让你看看，”她说。 She shook her fist. "I'll show you," she said.