单词	xtra
释义	xtra ['ekstrә] n. [电讯]字母X
随便看	radio-communication line of centimetric wave radio communication net radio communication range radio communication receiver radio communication regulation radiocommunications radio communications radio communication service radio communication set radio communications set radio communication statistics radio communication system radio communication transmitter radio communicator radio compartment radio compass radiocompass radio compass bearing indicator radio compass calibration data radio compass error radio compasses radio compass fix radio-compass indicator radio-compass receiver radio compass sensor cfxz cfyd cfyh cfyj cfyl cfyq cfys cfyy cfzd cfzy 風紀風紋風習風聞風脚風致風船風船葛風花風葬