及其相应知识点有哪些?sawdust pits had been replaced by soft foam cushions,i_英语解答

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sawdust pits had been replaced by soft foam cushions,ideal for flopping

人气：174 ℃　时间：2020-09-05 16:52:25

解答

（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.