effortless
adj.容易的；不费力气的；应付自如的 副词：effortlessly名词：effortlessnesseffortless Adjective requiring or apparently requiring no effort;"the swallows glided in an effortless way through the busy air" not showing effort...
adj.容易的；不费力气的；应付自如的 副词：effortlessly名词：effortlessnesseffortless Adjective requiring or apparently requiring no effort;"the swallows glided in an effortless way through the busy air" not showing effort...