ph.

1. I came upon an old friend of mine in the library yesterday.
昨天我在图书馆碰上了我的一个老朋友。

2. My parents have never come upon us for anything.
我的父母从来没向我们要求过任何东西。

3. At this moment a strange idea came upon him.
此时，他突然产生了一个奇怪的想法。

4. A leaf came upon her book as she was reading.
她正读著书，一片树叶落到她的书上。

5. I will try to avoid coming upon my children in my old age.
我要尽力避免在晚年时成为孩子们的负担。

1. 遇到：come under heavy criticism遭到严厉的批评 | come upon 遇到 | communicative competence交际能力

2. 突然袭击：come up with产生;找到 | come upon 突然袭击 | comedyn.喜剧;一出喜剧,喜剧性事件

3. 突然产生：come upon 突临 | come upon 突然产生 | come what may 不论怎样

4. 突临：come upon the stage 进入社会 | come upon 突临 | come upon 突然产生

1. 偶然碰到(或发现)
If you come upon someone or something, you meet them or find them by chance.

e.g. I came upon an irresistible item at a yard sale.
在一次庭院拍卖会上，我偶然发现了一个忍不住想买的东西。

2. 产生(某种态度或感觉)
If an attitude or feeling comes upon you, it begins to affect you.

e.g. A sense of impending doom came upon all of us.
我们所有人都有一种大难临头的感觉。

verb

1. take possession of

e.g. She entered upon the estate of her rich relatives

Synonym: enter uponluck into

2. find unexpectedly

e.g. the archeologists chanced upon an old tomb
she struck a goldmine
The hikers finally struck the main path to the lake

Synonym: fall uponstrikelight uponchance uponcome acrosschance onhappen uponattaindiscover