a. reasonable swiftness: swiftness accompanied withjudgement and caution伴随着谨慎判断的迅速。 △H.V.1.2.305: “and all thin gs thought upon / That may withreasonable swiftness add / More feathers to ourwings；”(The English will fly to France with the speedof birds.)还要把一切有关事项都细心加以考虑，可以既迅速又 周到地给我们的翅膀增添羽毛。