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v.急行,加速( speed的过去式和过去分词 );超速行驶;快速运送;加速,促进 英英释义: speed[ sped ]n.distance travelled per unit time同义词:velocitya rate (usually rapid) at which something happens"the project advanced with gratifying speed"同义词:swiftnessfastnesschanging location rapidly同义词:speed