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- to expatiate upon a theme 详述一个主题
- His deep knowledge of the historical background enabled him to expatiate upon the significance of the movement. 他对于历史背景的深刻了解使他能够详细阐述这场运动的意义。
- My present purpose is not to expatiate upon my walks. 现在我并不打算絮絮不休地描写我的散步。
- He is too timid to venture upon a new undertaking. 他太胆小，不敢从事新的事业。
- My present purpose is not to expatiate upon my walks 现在我并不打算絮絮不休地描写我的散步。
- Our room opened upon a view of the bay. 从我们房间可以看到海湾。
- to elaborate upon a theme or an idea 对某一主题或想法作详细说明
- I come upon a group of children play in the street. 我遇到一群孩子在街上玩耍。
- to elaborate upon a theme or an idea 对某一主题或想法作详细说明
- To inflict(vengeance or punishment) upon a person. 施行报复对某人施以（报复或惩罚）
- He patterned himself upon a man he admired. 他模仿一位他钦佩的人。
- Let's fix upon a date for the meeting. 我们来确定一个会议日期吧。
- A discussion or discourse on a theme. 评论就某一主题进行讨论
- His deep knowledge of the historical background enabled him to expatiate upon the significance of the movement 他对于历史背景的深刻了解使他能够详细阐述这场运动的意义。
- He hit upon a photo taken ten years ago. 他偶然发现一张十年前拍的照片。
- A subdivision of a theme, a thesis, or an outline. 标题；细目主题，论文或提纲下面的副标题
- In the forest, we came upon a flock of pheasants. 在森林里我们碰到一群雉鸡。
- Does our reading group need a theme? 我们的读书会需不需要一个主旨?
- It's hard to get by just upon a smile. 只凭一相情愿是很难立足。
- A subdivision of a theme,a thesis,or an outline. 标题；细目主题，论文或提纲下面的副标题
