词汇	retractable mast
释义	retractable mast 升降桅
随便看	low amplitude echo low amplitude load Low amplitude load strengthening low amplitude potential low-amplitude potential lowamplitude reservoir low amplitude reservoir low amplitude signals low-amplitude structural area low amplitude structural reservoir low amplitude structure low-amplitude structure low amylase content mutants lowan low analysis fertilizer low-analysis fertilizer low-analysis phosphate fertilizer low analysis phosphorous fertilizer low anastomosis lowance low anchor low and ball low and behold low- and below middle- income urban families low and brief