使用'On'和'Upon'的短语动词 - 执行一个动作（基于）

to have confidence that someone will fulfill one's wishes or requests

依靠, 信赖

to depend on something for a particular outcome

依赖于, 悬挂于

to make a brief reference to a particular topic in the course of discussing something broader

简要提及, 触及

to make a choice or reach a conclusion after careful consideration

决定, 选择

to take advantage of someone's feelings, fears, or weaknesses

利用, 玩弄

to dedicate time and effort to produce or fix something

致力于, 专注于

to encounter someone or something unexpectedly

偶遇, 碰到

to encounter suddenly or unexpectedly

偶然遇到, 突然发现

to suddenly have a great idea

偶然想到, 突然有了好主意