这有助于消除对一次性完成大型项目的不必要的恐惧。
This helps remove the unnecessary fear of having to do a large project all at one time.
您可以一次性完成60个甜甜圈。
喷漆：为了一次性完成整座房子的喷漆作业，要用2万多加仑的油漆。
The paint: in order to paint the entire home once it would take more than 20,000 gallons of paint.
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