[zhèn]
[動]
（搖動； 揮動） shake; flap; wield
shake off
振落
flap the wings; flutter
振翅
（奮起） brace up; rise with force and spirit
never to rise again
一蹶不振
lose one's appetite; have a jaded appetite
食欲不振
feel one's spirits buoyed up
精神為之一振
The morale of our troops was greatly boosted.
我軍士氣大振。