upon

1121年进入英语，直接源自古英语的uppan，意为在…上面；最初源自古北欧语的upp，意为向上。

习语 prep. (almost) upon you 近在咫尺；即将来临 if sth in the future is almost upon you , it is going to arrive or happen very soon The summer season was almost upon them again. 转眼间他们又要过夏天了。 once upon a time （用于故事的开头）从前，很久以前 used, especially at the beginning of stories, to mean ‘a long time in the past’ Once upon a time there was a beautiful princess. 从前，有一位美丽的公主。