Seven percent would be possible for orders for, say, 500 or more.
订购500台或500台以上都不得有可能给予7%的折扣。
Although mankind has undergone no general improvement in intelligence or morality, it has made extraordinary progress in the accumulation of knowledge.
虽然人类有智力和道德上没有得到普遍提高,但在知识积累方面却取得了巨大的进步。