No one discovers a rarity by chance.

无论是谁都不会一下子就发现一件。

Nothing happens by chance or by means of good luck.

没有事情是偶然出现或运气使然。

It was from words dropped by chance that, little by little, everything was revealed to me.

他无意中吐露一些话逐渐使我搞清了他来历。

I see. Bump into means to meet somebody by chance. So were they friendly?

无意中邂逅就是偶然遇见某个人。他们怎样，待人友善吗？

It was never in my mind to breeding camel; it just came by chance.

我从未想过养骆驼，这只是一个巧合。

You didn't, by chance, buy anything at Shopping World while you were here?

你在这里时候，碰巧没有在购物世界买东西吧？

But Feynman did not earn his academic prowess by chance.

但费曼学术成就并非偶然。

People buy tickets, but only a few tickets are chosen by chance to win prizes.

人们购买彩票，但只有少数彩票被偶然选中赢得奖项。

It just doesn't happen to them by chance.

这并不是偶然发生在他们身上。

Many of the first medicines were discovered by chance.

许多最物都是偶然发现。

A) ;;made it more effective by chance.

A）；；偶然使它更有效。

Actually the boss met her quite by chance the very day she was made redundant.

实际上，老板遇到她完全是个巧合，就在她被解雇那天。

My capital — Geneva's the second most populous city by chance.

我首府——日内瓦是人口第二多城市。

And if by chance he does, we'll throw him back into the sea.

就算他真来了，我们也能把他赶回去。

The clustering of orbits like this is extremely unlikely to have happened just by chance.

像这样聚集在一起轨道极不可能是偶然发生。

Now, the Germans just didn't come to that house by chance.

德国人不是偶然闯进他们家。

Hey, Miguel. Is, uh, my mom around by chance?

你好，米格尔。我妈在家吗？

Then, by chance, Carlos met Austin — and saw footage from Austin's shark-mounted cameras.

后来一个偶然机会，卡洛斯遇到了奥斯汀，并且看到了奥斯汀安装在鲨鱼身上摄像机拍摄画面。

We use this expression to say something happened by chance.

我们用这句话来表达偶然发生事情。

By chance, would you talk to her for me?

有没有可能你帮我跟她美言两句？