look back to与look back at区别
look back to释义： 回顾 例句： Look back to your childhood. 回想一下你的童年时代。 look back at释义： 回头看 回忆 展开释义 例句： At the end of an iteration of work, we always look back at how we did and figure out what we can do differently next time to improve. 持续的反馈和改进：在重复工作的结束时...