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1·Here the selling expense is chosen as decision variance.

销售费用被作为决策变量。

2·In the selling expenses control, the travel expense how to limit and so on.

销售费用控制中，差旅费如何界定等。

3·Partly, she has been busy, selling their old house, moving into a new one they are renting at half the monthly expense, seeing her daughter off to kindergarten.

但她还在忙碌着，卖掉老房子，搬进一个房租只有原来一半的住地，天天去幼儿园接送女儿。

4·This may sound minor, until you find that you're the one doing the paperwork at the expense of real work (building your product, selling to and serving clients, etc.).

这个听起来好像是小事一桩，直到你发现你牺牲了实际工作（创立产品，销售产品和为顾客服务等）来处理这些文书工作的时候，你就不这么认为了。

5·Another aspect, it do not compete with to selling the period income matching each other in a bad debt expense.

另一方面，它没有将坏帐费用与销售期间的收入相配比。