Conceptually, the entire business from first customer contact, through completion of the work and payment of the bill, represents a single, macro-level unit of work, with a lifetime of days to weeks.

从概念上讲，从第一次顾客联系到完成工作和帐单支付的整个业务表示单个宏观层次的工作单元，并具有数天到数周不等的生命周期。

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Democratic bigwigs have promised a single bill that keeps spending at last year's level.

ECONOMIST: The 110th Congress

The tax law gradually increased the standard deduction for married taxpayers who file jointly to an amount equal to twice the standard deduction of persons filing a single return, resembling the original 1948 bill that allowed two full deductions for married couples regardless of the level of income.

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