碰巧

If you happen to chance upon that document, let me know.

如果你碰巧发现了那文件，请通知我。

To discover by accident; to come upon by chance; an unexpected meeting

意外地发现；碰巧遇到；意外的会面

The Chelmsford Insurance Company won't insure it, for they say if the place did happen to catch fire upon a windy night it would blaze away like so much tinder, and nothing in the world could save it.

切尔姆斯福特保险公司不肯为它承保火险，因为他们说，如果这个地方在大风之夜碰巧着了火，就会象那么多火绒一样在熊熊大火中烧个精光，世界上什么东西也救不了它。

As it happens 偶然: As it happens, I have my chequebook with me.

碰巧我带着支票薄。

Happened to have some sodium chlorate lying around from a hot tub we just picked up.

碰巧有一些氯酸钠从热躺在浴缸，我们拿起左右。

I had someone at Christie's put them on hold.

碰巧我有个在奥斯陆的朋友

As it happens, Mr Sarkozy, never an instinctive Germanophile, got off to a fractious start with Ms Merkel, falling out over French plans for a Mediterranean Union; and it took time for Ms Merkel to get used to Mr Sarkozy's tactile chumminess.

萨科齐绝不是天生的亲德派，但是他却碰巧和默克尔在争吵中开始了两国的关系，他们最终因法国就一个地中海联盟所提出的方案意见不合而闹翻。默克尔花了一段时间来适应萨克齐用触摸来表示友好的习惯。

No bridge across the Rhine 莱茵河上不通桥,法德两国不建交 As it happens, Mr Sarkozy, never an instinctive Germanophile, got off to a fractious start with Ms Merkel, falling out over French plans for a Mediterranean Union; and it took time for Ms Merkel to get used to Mr Sarkozy's tactile chumminess.

萨科齐绝不是天生的亲德派，但是他却碰巧和默克尔在争吵中开始了两国的关系，他们最终因法国就一个地中海联盟所提出的方案意见不合而闹翻。默克尔花了一段时间来适应萨克齐用触摸来表示友好的习惯。

Armored boy scouts are nothing more than common criminals with access to some antiquited technology,criminals who have the audacity to claim thismost important military installations Pentagon as their own personal clop house.

们只不过是碰巧搞到了一些古老科技装备的普通罪犯而已，这些罪犯竟然胆敢把美国最重要的军事设施--"五角大楼"当作他们自己的私有据点。

It is no coincidence that...

不是碰巧的事。。。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。