The objects that DAOs operate on are usually called value objects, although the term data transfer objects (DTO) is more meaningful.

DAO所操作的对象通常称为值对象，尽管术语数据传送对象(data transfer object, DTO)的意思更为贴切。

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In order for the tools to have the maximum value to the users, they have to adhere to standards and operate with each other.

为了使这个工具对用户有最大的价值，他们不得不坚持标准，共同操作。

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In many ways, for is the assignment of a variable to the current value in a node set, so you can operate on that variable.

在很多方面，for就将节点集的当前值赋给变量从而操作该变量。

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Regardless of how you choose to track your auto expenses, the knowledge you get from doing so will put you in the driver's seat when it comes to figuring out how much your vehicle is costing you to operate and documenting its value when it's time to get rid of it.

CNN: Use your Mac to track your money

One can no more assess the work of scientists without examining the incentives and value systems under which they operate than one can assess the work of mortgage bankers without looking at the incentives and value systems that led them to drive the economy into a ditch.

FORBES: What Do The War On Cancer And Climate Modeling Have In Common?

However, climate modelers operate under very different incentives and value systems than those of the legions of cancer researchers who have spent 40 years fighting the most expensive medical battle in American history, thus far coming up short.

FORBES: What Do The War On Cancer And Climate Modeling Have In Common?