For the first time,she felt free as a bird.这里的for如何解释?

For the first time,she felt free as a bird.这里的for如何解释?
For the first time,she felt free as a bird.这里的for如何解释?

For the first time,she felt free as a bird.这里的for如何解释?
英文相当于”As...”
中文相当于”对于．．”,即对于第一次来说/在最初的时候,.
又如：For／As a girl,.