This is because the actual source code and the variable binding can change, based on the environment or the build time definitions of macros and preprocessor commands.

这是因为实际的源代码和变量绑定可以更改，这是建立在环境或者构建宏预处理程序指令的时间定义的基础上的。

youdao

An assign activity like the extractProductName can fetch pieces from one variable, which is typically XML based content, and store it in another variable.

象extractproductname这样的赋值(assign)活动可以从一个变量中(一般是基于XML的内容)提取部分信息，然后将之保存到另一个变量中。

youdao

The interpreter can infer variable type based on its use.

解释器可以根据用法来推断变量的类型。

youdao

"The bank will estimate its costs based on its fixed costs, variable costs, the cost of their employees, the rent and so on and so forth.

VOA: special.2009.12.11

The rate for medical and moving purposes is based on the variable costs.

FORBES: 2013 IRS Mileage Rate Increases To 56.5 Cents Per Mile

It is a founding member of ERIS, which has developed a futures contract that mimics a variable Libor-based interest rate swap.

FORBES: Is There Profit to be Made from Dodd-Frank Legislation?

Messrs Feldstein and Samwick also assume that retired folk will convert their personal retirement accounts into a variable-rate annuity, based on a combination of stocks and bonds, rather than a fixed-rate annuity.

ECONOMIST: Social Security reform