No one discovers a rarity by chance.

无论是谁都不会下子就发现件珍品。

Nothing happens by chance or by means of good luck.

没有事情是偶然出现或运气使然。

A) ;;made it more effective by chance.

A）；；偶然使它更有效。

It was just by chance really.

那真的是偶然。

It just doesn't happen to them by chance.

并不是偶然发生在他身上的。

Many of the first medicines were discovered by chance.

许多最早的药物都是偶然发现的。

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

你好，米格尔。我妈在家吗？

But Feynman did not earn his academic prowess by chance.

但费曼的学术成就并非偶然。

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

我的首府——日内瓦是人口二多的城市。

Why are the chickens crying? By chance

些鸡为什么乱叫？是偶然的吗？

The cop had been there by chance; he never hit his lights.

警察那会是偶然在那儿的，他从不闯红灯。

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

德国人不是偶然闯进他家的。

The booster lowered the chances of death by between 75 and 79 percent.

加强针可降低75%-79%的死亡几率。

Skill can be important, but in some games, you can win by chance.

技巧可以很重要，但在些游戏中，你可以靠运气取胜。

She met Wu, who was an intern at the time, purely by chance.

她认识了当时还是实习生的吴，纯属偶然。

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。他怎样，待人友善吗？

We use this expression to say something happened by chance.

我用句话来表达偶然发生的事情。

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

你在里的时候，碰巧没有在购物世界买东西吧？

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

就算他真来了，我也能把他赶回去。

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

后来个偶然的机会，卡洛斯遇到了奥斯汀，并且看到了奥斯汀安装在鲨鱼身上的摄像机拍摄的画面。