spreadon铺在 ... 上面spreadv.传播；展开；散布；铺开；伸展；涂撒n.范围；传播；差额；幅度；盛宴spreading kinetics铺展动力学spreading distance发散距离spread with butter在 ... 上涂黄油spreading pavement摊铺spread application推广spread of concrete混凝土混合料的散布spreading velocity传播速度spreading evenness摊铺平整度spread one's wings张开翅膀,在实践中检验自己的能力Spread of language语言传播