参见：慌张[huāngzhang]

• 发慌

  become flustered

• 沉住气，不要慌。

  Just take a deep breath; don't panic.

• 用不着慌

  no need to panic

• 慌作一团

  get each other worked up into a frenzy

• 我一上台，心就慌了。

  I panicked the second I set foot on stage.