[zhèn]
[动]
（摇动； 挥动） shake; flap; wield
shake off
振落
flap the wings; flutter
振翅
（奋起） 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
精神为之一振
The morale of our troops was greatly boosted.
我军士气大振。