美 [kʌm əˈbaʊt]
改变方向：指风向改变为北方。
改变策略：指改变为新的方针或方法。
发生：指某事情突然发生。
come about // [ coming came comes ]
动词词组 When you say how or when something came about, you say how or when it happened. 产生; 发生
The peace agreement came about through intense pressure by the international community.
该和平协议是在国际社会的强大压力下产生的。
That came about when we went to New York last year.
那件事发生在去年我们去纽约时。
(帆船)抢风调向
发生
C 长寿面带来（bring about）长寿，而不是发生（come about），出去（get out），take 和about 通常不搭 配。 7.
... British 5brItIF a. 英国的; n. 英国人 come about 发生；产生 gas gAs n. 煤气,气体,汽油; vt. 毒(死),加油 ...
... come about 出现；发生 come across 偶然遇到或找到 come along 进展：对一个目标有进步；前进 ...
How did this unhappy state of affairs come about?
这种不幸的情况是怎么发生的呢？
She recommends you train yourself to pay attention to good fortune by writing down three positive things that come about each day.
她建议你每天写下三件当天发生的积极的事情，以此训练自己关注自身的好运气。
I've come about my book.
我来拿我的书。
And I tend to sit down and improvise. Within those improvisations certain motives and ideas will come about that I like."
VOA : special.2010.07.19
And the truth of whether a book should or should not be censored is something that's come about through the diligent effort of a group, rather than a single arbitrary judge like the state licenser.
但一本书是否真正被控制,是一堆人努力的结果，而不是政府出版管理处的人员专横的决定。
弥尔顿课程节选 : 耶鲁公开课
or they go to any auditions that come about.
只要有试镜都去。
SpeakingMax英语口语达人 : 唱片即将上市
World leaders have already tried to temper expectations, warning that the current crisis did not come about overnight and will not be resolved in such short order either.
VOA : standard.2009.04.01
The students examine an issue, review what is already known, think about what they have learned and come to some conclusion.
VOA : special.2009.04.30
There is less than one chance in 10, 000 that it has come about accidentally.
It could only come about if a future administration, somewhere down the road, approved it.
This raises the question, how did such a situation come about in the US?