单词	bosun's chair
释义	bosun's chair 坐板
随便看	portable reactor portable reader portable real-time operating system portable realtime software portable real-time software portable receiver Portable Reconfigurable Line Sensor portable recorder portable recorderreceiver portable recorder-receiver portable recording device portable recording instrument portable recording wattmeter portable rectifier portable refrigerating unit portable refrigeration system portable refrigerator portable reinforced computer portable relational database portable remote control Portable Remote Telecommunications System portable resistance welder portable respiration aiding machine portable resuscitator portable retort