| 例句 |
preposition The decision was based upon two considerations. 这一决定基于两种考虑。 once upon a timerow upon row of seats mile upon mile of dusty road绵延数英里尘土飞扬的道路 thousands upon thousands of letters成千上万封信件 Once upon a time there was a beautiful princess. 从前，有一位美丽的公主。 The summer season was almost upon them again. 转眼间他们又要过夏天了。 |