rarely的名词和形容词是什么
rarely的名词是rareness和形容词是rare，rareness中文意思是n. 稀薄；稀罕；珍奇
The slotting fee accords with the resource rareness principle and the land rent theory of economics too, and it has positive impact on social economy.进场费也符合经济学的资源稀缺性原理和地租理论，能促进社会资源的优化配置，并不破坏市场秩序。