碰巧

Perhaps you might chance on the at some old bookstall .

或许你会碰巧在旧书摊上买到这本。

Perhaps you might chance on the dictionary at some old bookstall.

或许你会碰巧在旧书摊上买到这本辞典。

Perhaps you might chance on / upon the dictionary at some old bookstall.

或许你会碰巧在旧书摊上见到这本字典。

Well, that's just the breaks, you know?

这个嘛，那只是碰巧发生的，不是吗？

I appreciate if you would let me know if you happen to find these minor bugs.

我明白，如果你让我知道，如果你碰巧发现这些小错误。

I happened to bump into you along the way.

我只是碰巧遇见了你。

I happened to find the letter on the back porch of the bungalow.

我碰巧在平房的后门廊发现了这封信。

If you caught your son burning ants with a magnifying glass, would it bother you less than if you found him torturing a mouse with a soldering iron?

如果你碰巧看到你的儿子正在用放大镜灼烤蚂蚁，你会有什么感觉？是不是没有比你看到他用烙铁虐待老鼠时那样生气呢？

One morning,on his way work,Ron throws a burrito out of his car,it happens to knock at a motorcycle driver's head.

一天早上，在他上班的路上，罗恩将一个玉米饼扔到了车窗外，它碰巧砸到了一个摩托车驾驶员的头上。

I happen to know that you're burying my cat.

我碰巧知道你要埋我的猫

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。