look back   (TTS發音)

1. review the past ； think of what has happened回顧過去；回想

    If we look back， we will realize the tremendous changes reform has made. 回顧過去，我們就會發現改革帶來的巨大變化。

    He looked back with remorse on the serious mistakes he had made. 他回顧自己所犯的嚴重錯誤，深感悔恨。

    As John looked back，his life seemed good to him. 約翰回顧過去的生活時，他覺得過得不錯。

2. show signs of retrogression or interrupted progress後退；停止不前；畏縮

    Don't look back； you will succeed. 不要畏縮，你一定會成功的。