materially的解释ad.实质上,重大,物质上materially的例句Thisisn'tmateriallydifferentfromtheoldsystem.这和旧制度并无很大不同.Amarketconditioninwhichpurchasersaresofewthattheactionsofanyoneofthemcanmateriallyaffectpriceandthecoststhatcompetitorsmustpay.寡头买主垄断一种由少量买方控制的市场状况，由于买主极少，以至于任一买主的行为都有可能极大地影响价格及竞买者所必须偿付的费用
