You can easily create a scrip account within the game to add to and subtract from as a result of an agreed-upon exchange by the players.

很容易在游戏中创建一个通货帐号，玩家之间的交换会导致他们的帐号余额发生变化。

youdao

The little girl has begun to learn to add and subtract.

这小女孩已在学做加减法了。

youdao

Account — an entity bean that represents a user account and permits operations to get the account information, set, subtract and add to the balance, and get and set the account type.

Account——是一个实体bean，表示一个用户的帐号，并且允许用户查看帐号信息、提款和存款，而且还可以让用户查看以及设置帐号类型。

youdao

You've got to juggle the two equations, multiply that by 4, multiply that by 3, add and subtract and so on.

同时处理这两个方程,这个两边乘以4,另一个两边乘以3,将两方程相加或相减求出答案

耶鲁公开课 - 基础物理课程节选

And since we don't have to charge compensate, we can add or subtract neutrons at liberty.

因为我们没有电荷补偿，我们就可以随意地加上火减少中子。

麻省理工公开课 - 固态化学导论课程节选

But all of you in this room probably remember what we technically call the base 10 system or decimal system because back in grade school or the like, you learned to count and add and subtract numbers by way of columns.

但是，在座的每一位可能都记得,这在小学的时候学的,以10为进制的系统或者十进制系统,通过数列方式学习数数和加减法。

哈佛公开课 - 计算机科学课程节选

If boys and girls in Africa and other developing nations don't learn how to read, write, and add and subtract, this world is just going to move on without them.

NPR: President Bush's Remarks on the World Agenda

Of course, there is enormous value in knowing how to add and subtract and pen a coherent sentence, but the education argument as it pertains to our economic health is completely divorced from reality.

FORBES: Magazine Article

Most states base their income tax laws on federal law and most have their own versions of add-back and subtract modification to adjusted gross income.

FORBES: Congress Would Say 'Nein, Nein, Nein' To Cain's 9-9-9 Tax Plan