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

我不擅长用脑计算，也就心算。

But I got pretty good at it as a barman.

但我做酒保时很擅长心算。

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

欧维看起来就像在心算一共几个月。

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弄清楚心算能让我们汗流浃背。

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

“莱佛士先生，”经理在心算之后宣布道。

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算，将荒谬的。

So I'm not going to try anymore.

所以我还死了这条心算了。

I can add up in my head quite easily.

【add】我做心算加法很轻松。

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

【reckon】帕特在心算所有的花销。

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

我在心算，想弄清楚我面前的零食。

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很差，并在心算时让她远离视线。

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

我特别在心算上挣扎，这可能最糟糕的数学，因它应该最简单的。

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.

他们表示，这种公式能够更准确地计算狗狗的年龄。他们的新方法需要比简单的心算稍微复杂一点的方法来计算狗狗的年龄。

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

保罗心算了一下， 说：“少了三个。 ” “他们不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，我在做心算时最大的困难侵入性想法，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们如何进行心算，以及谁最有可能最终做出与其他人相同的选择以及原因。

“Mental arithmetic also requires the ability to retain order information in the short-term via rehearsal, and may be similarly affected by their performance in the presence of changing-state, background environments, ” he added.

“心算也需要通过练习在短时间内记住信息的顺序，因此也可能受到背景环境的影响，”珀罕补充道。