| 词汇 | upon |
| 释义 | 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. |
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