I wasn't good at doing sums in my head - you know - mental arithmetic.

我不用脑计，也就是心。

But I got pretty good at it as a barman.

但我做酒保时心。

Ove looks like he's counting the months in his head.

欧维看起来就像在心一共几个月。

Getting these answers right requires both a knowledge of financial vocabulary, and the ability to make mental calculations.

答对这些问题既需要财务词汇的知识，也需要进行心的能力。

Psychologists have been trying to work out why mental arithmetic can bring us out in a sweat.

心理学家一直在试图清楚为什么心能让我汗流浃背。

Did some quick mental math and tried to get.

做了一些快速的心并试图得到。

And then they have to do challenging mental math out loud.

然后他必须大声做具有挑战性的心。

" Mr. Raffles, " announced the manager after a mental calculation.

“莱佛士先生，”经理在心之后宣布道。

The sheer amount of mental computation required to understand one word, would be ridiculous.

理解一个词所需的大量心，将是荒谬的。

So I'm not going to try anymore.

所以我还是死了这条心了。

I can add up in my head quite easily.

【add】我做心加法轻松。

Pat was reckoning up the cost of everything in her mind.

【reckon】帕特在心所有的花销。

Me doing the mental math to figure out what snacks are in front of me.

我在心，清楚我面前的零食是什么。

Gilbert Blythe spelled her down in class and left her clear out of sight in mental arithmetic.

吉尔伯特·布莱斯在课堂上把她拼写得差，并在心时让她远离视线。

I specifically struggle with mental math, which might be the worst math to be bad at, because it should be the simplest.

我特别在心上挣扎，这可能是最糟糕的数学，因为它应该是最简单的。

They say it more precisely determines canine age. Their new method requires a little more than simple mental arithmetic to work out a dog's age.

他表示，这种公式能够更准确地计狗狗的年龄。他的新方法需要比简单的心稍微复杂一点的方法来计狗狗的年龄。

Paul did the mental arithmetic, said: " That's three short." " Why don't they have two carryalls to each crawler? " barked the Duke.

保罗心了一下， 说：“少了三个。 ” “他为什么不为每个爬行者配备两个手提包？ ” 公爵咆哮道。

So, it turns out my biggest struggle while doing mental math are intrusive thoughts, clouding my memory and getting in the way of the right answer.

所以，事实证明，我在做心时最大的困难是侵入性法，它模糊了我的记忆并妨碍了正确答案。

Researchers have developed sophisticated techniquesto understand how we do that mental math, and who's most likely to end up making the same choiceas somebody else and why.

研究人员已经开发出复杂的技术来了解我如何进行心，以及谁最有可能最终做出与其他人相同的选择以及原因。

I am afraid I could not help them much; indeed, if they came to accounts, I should be quite in the way, for I never could do sums in my head.

我恐怕帮不了他多少忙；说实在的，要是他起账来，我会完全碍事的，因为我从来不会心。