概念外壳名词的从句信息是其重要用法。
The clausal information of a shell noun is an essential part of its usage.
冬天的新鲜水果价格要比它秋天的价格贵一倍。 （注意what从句常可顶一个名词来用。）
The price of fresh fruit in winter is twice what it was in autumn.
冬天的新鲜水果价格要比它秋天的价格贵一倍。 （注意what从句常可顶一个名词来用。）
The price of fresh fruit in winter is twice what it was in autumn.
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