upon的音标是英式发音[əˈpɒn]，美式发音[əˈpɑːn]。

upon的意思是介词，相当于"在...之上"或"关于"，常用于正式语境或固定短语中。

upon的翻译为"在...上面"或"关于"。

以下是10个带有中文翻译的英文例句：
1 The decision was based upon careful consideration 这个决定是基于仔细考虑
2 She placed the book upon the table 她把书放在桌子上
3 Once upon a time there was a beautiful princess 从前有一位美丽的公主
4 He came upon an old friend in the street 他在街上偶然遇到一位老朋友
5 The contract is dependent upon your approval 合同取决于你的批准
6 She insisted upon seeing the manager 她坚持要见经理
7 The project was embarked upon last year 这个项目是去年开始的
8 They came upon a hidden treasure 他们偶然发现了隐藏的宝藏
9 The success of the event rests upon your participation 活动的成功取决于你的参与
10 He reflected upon his past mistakes 他反思了自己过去的错误

常见短语搭配：
depend upon 依赖
once upon a time 从前
come upon 偶然遇到
insist upon 坚持
rely upon 依靠
decide upon 决定
agree upon 达成一致
call upon 号召
look upon 看待
build upon 建立在...基础上