From all listed prices we allow a discount of 10 percent on orders received on or before 31st May.
5月31日或此前收到的订单,我们都按价目单上的价格给10%的折扣。
In the first place, any scientific study requires that there be no preferential weighting of one or another of the items in the series it selects for its consideration.
首先,任何科学研究都要求人们对可供考虑的诸多因素不能厚此薄彼,偏向某一方面。