单词	echelon clouds
释义	echelon clouds 梯状云
随便看	conventional lw of nations conventionally conventionally-armed conventionally calculation conventionally chilling conventionally cooled generator conventionally dressed conventionally-fired power plant conventionally indirect speech act conventionally-powered ship conventionally powered submarine conventionally-powered submarine conventionally powered submarines conventionally proper conventionally tolled facility conventionally true surface emission rate conventionally TRUE value conventionally true value of a quantity conventional machine mining conventional magnet conventional management conventional management models Conventional mandatory ventilation conventional mandrel conventional maneuver