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。
that twenty or thirty pages of ideas and information would be capable of turning the present-day world upside down, or even destroying it.
二三十页材料中的思想和情报会使当今的世界天翻地覆,甚至毁灭这个世界。