I was doing a long, hard sum, and in rubbing out another sum to make room for it, I rubbed out the difficult one by mistake.

刚刚做一个又长又难的加法，擦去另一个式子给它腾空时不小心把难的式子擦掉了。

Numeracy is the ability to understand basic maths, count, and add up. Your signature is your name written in your own handwriting style. It shows that something has been written or agreed by you.

Numeracy是理解基本数学、计数加法的能力。signature是用您自己的笔迹写的名字。它表明某事已经由您书写或同意。

Holmes also needed-or at least would very much have appreciated, sophisticated gadgetry of a sort that could make very fine measurements from tiny samples, and as we have seen it was all he could do to get a simple adding machine.

霍姆斯还需要──至少会很高兴拥有：一种能对细小样品进行精密测量的先进仪器，而们已经知道，他所能到的不过是一台简单的加法机。

After counting, many children learn to solve simple addition problems.

数完数后，许多孩子学着做简单的加法问题。

Where do you stand on addition, subtraction, multiplication and division?

你的加法与法乘法与除法是什么情况？

Multiplications and divisions are really just many additions and subtractions.

乘法除法实际上只是许多加法法的累积。

In music, that's called an inversion, and it's the equivalent of addition from earlier.

音乐中，这被称为倒装，相当于先前所说的加法。

Entering the world of adding negativity has A LOT of rules.

进入负数加法的世界有很多规则。

And operations like addition and subtraction as verbs.

并将加法法这样的运算视为动词。

And so we have to understand how scalar addition works.

所以们必须理解标量加法是如何工作的。

No, but it makes me realize that we forget that politics is about addition.

不，但这让意识到们忘记了政治是关于加法的。

It's possible there was a carry from the previous addition of A0 and B0, so this time we need to use a full adder that also inputs the carry bit. We output this result as sum1.

有可能之前A0B0的加法有进位，所以这次们需要使用全加器，也输入进位位。们将此结果输出为 sum1。

It's simple addition for a single atom, rather than an average of all the relative atomic masses of all the silver atoms on Earth.

这是单个原子的简单加法， 而不是地球上所有银原子的所有相对原子质量的平均值。

His father, a bookkeeper, had a monstrous metal adding machine in his office that I used to love to play with.

他的父亲是一名簿记员，他的办公室里有一台巨大的金属加法机，以前很喜欢玩它。

When you add complex numbers, uh, you can think of it  like vector addition with the tip to the tail.

当你相加复数时，你可以把它想象成尾对尾的向量加法。

Similarly, in functional programming, there's a notion of a sum type, which, again, is a type level notion of addition.

同样， 函数式编程中，有一种称为总类型的概念，这又是加法类型层面的一种体现。

He demonstrated an early ability with mathematics and was able to add large columns of numbers in his head.

他早年便展现出卓越的数学才能，能够心算多位数的加法。

One of the videos was about mathematics, and it involved a teacher talking about basic addition, subtraction, and multiplication.

其中一个视频是关于数学的，内容涉及一位教师讲解基本的加法、法乘法。

I want to compile into a program called addition.

想编译成一个叫做加法的程序。

Just based on my definition of vector addition.

只是基于对矢量加法的定义。