The real wild card is shale.

真正的不确定性因素是页岩。

It serves as a " wild card" in the game.

这是游戏中的一张“外卡”。

I think that's part of the wild card.

我认为这是外卡赛的一部分。

Over and over again, the nature deals us the wild cards.

大自然总是这样对待我们，不按常理出牌。

This match is too important, and you're a wild card.

这场比赛关系重大 你的发挥又不稳定。

Her ranking drifted to 133 but she entered Wimbledon this year on a wild card.

因此她的世界排名滑落到了133，但是，此次郑洁倚靠外卡进入温布尔登。

" The real wild card for the U.S. and many other developed countries is immigration."

“对美国和其他许多发达国家来说，真正的不确定因素是移民。”

Lawrence Creatura, portfolio manager for Federated Investors, says the Syrian conflict is a wild card.

联合投资公司的投资组合经理劳伦斯·克雷亚图拉表示叙利亚冲突是个未知因素。

I'll use the wild card as a king, so now I have four kings.

我将外卡作为k使用，那么我就有4张K。

The world number one fought back after losing the opening set against wild card player Jack Draper.

这位世界排名第一的选手在第一盘输给外卡选手杰克·德雷柏后奋起反击。

But card games are not the only places you will hear the term " wild card."

但纸牌游戏并不是你唯一能听到“外卡”这个词的地方。

Jack is too much of a wild card to get a place on our team.

杰克是个未知数，他不太可能在我们队中获得一席之地。

We're taking a gamble, she's a wild card, but let's hope she delivers what she promises.

我们是在冒险，她是一个未知数，希望她能遵守承诺吧。

The wild card in this competition is Chelsea: nobody really knows which way the score will go.

没有人能预测最后比分。

And, as you can probably guess, we use " wild card" to describe people as well.

而且，正如你可能猜到的，我们也用“外卡”来形容人。

Here is an example of how a player might talk about their use of a wild card in a game.

这有一个玩家如何在游戏中谈论他们使用外卡的例子。

A wild card? You mean he's like a playing card — a heart, a spade or maybe a diamond?

疯狂的纸牌？你是说他像扑克牌一样吗，可能是红心，黑桃或者是方片？

Here is an example showing how a wild card team won the championship of American football, the Super Bowl.

下面是一个外卡球队如何赢得美式橄榄球超级碗冠军的例子。

It's a reminder that there's still, you know, some potential wild cards that could play out in this impeachment process.

这提醒我们，这一弹劾进程仍有一些潜在的未知因素会发挥作用。

Finally, in the world of computers, the term " wild card" describes a symbol that programmers use.

最后，在计算机世界里，术语“wild card”描述了程序员使用的一个符号。