及其相应知识点有哪些?sawdust pits had been replaced by soft foam cushions,ideal for flopping

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及其相应知识点有哪些?sawdustpitshadbeenreplacedbysoftfoamcushions,idealforflopping及其相应知识点有哪些?sawdustpitshadbee

及其相应知识点有哪些?sawdust pits had been replaced by soft foam cushions,ideal for flopping
及其相应知识点有哪些?
sawdust pits had been replaced by soft foam cushions,ideal for flopping

及其相应知识点有哪些?sawdust pits had been replaced by soft foam cushions,ideal for flopping
(床上)软和的泡沫垫替代了原来的刨花,这样翻滚起来更舒服了.