By happy coincidence, Robert met Richard and Julia and discovered they were experiencing similar problems.是什么意思？

By happy coincidence, Robert met Richard and Julia and discovered they were experiencing similar problems.

幸运的是，罗伯特碰巧遇到了理查德和朱莉娅，发现原来他们也碰到了类似的问题。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

happy

adj. 幸福的，快乐的，巧妙的，〈口〉有点醉意的；

例句
As long as most people are happy to have the monarchy, the abolitionist position is an arrogant fantasy.
只要大多数人还乐意保留君主制，废除它的主张就是痴人说梦。

coincidence

n. 巧合，一致，同时存在，并存；

例句
Mr. Berry said the timing was a coincidence and that his decision was unrelated to Mr. Roman's departure...
贝里先生说这是时间上的巧合，他的决定与罗曼先生的离开没有关系。

Robert

n. 罗伯特；

例句
Phillimore Island is named after Sir Robert Phillimore...
菲利莫尔岛以罗伯特·菲利莫尔爵士的名字命名。

met

v. 相遇( meet的过去式和过去分词 )，相识，开会，接触（某物）；

例句
When I saw you across the room I knew I'd met you before.
我在房间那头看见你时就知道我曾见过你。

Richard

n. 理查德（男子名）；

例句
She was the only British competitor apart from Richard Meade.
她是除了理查德·米德之外唯一的英国参赛者。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

Julia

n. 朱莉娅（女子名）；

例句
Rachel would have known Julia Stone anywhere.
甭管到哪儿，雷切尔都会认出朱莉娅·斯通。

discovered

v. 发现( discover的过去式和过去分词 )，碰见，撞见，了解到；

例句
He had discovered politics and was rapidly becoming absorbed by it...
他接触到了政治并且迅速地对它着了迷。

they

pron. 他/她/它们，人们，大家，政府，当局，她们；

例句
The storms had abated by the time they rounded Cape Horn.
他们绕过合恩角时，暴风雨已经减弱。

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

experiencing

体

例句
British business is now experiencing a severe recession.
英国商业现在正经历严重的衰退。

similar

adj. 类似的，同类的，相似的，同样的；n. 类似物，相像的人，相似物；

例句
The defendant asked for 21 similar offences to be taken into account...
被告要求考虑到类似的21起违法行为的情况。

problems

n. 问题( problem的名词复数 )，疑难问题，习题，思考题；

例句
There are two main problems which afflict people with hearing impairments...
听力有障碍的人们主要受到两大问题的困扰。