单词	behind one's back,
释义	英華字典資料庫同義詞☞raphe
随便看	rotational slide rotational slip rotational spectra rotational spectrum rotational spectrum--rotation spectrum rotational speed rotational--speed rotational speed of screw rotational speed range of generator rotational speed (rotative speed) rotational stability rotational state rotational--state rotational stiffness rotational strain rotational structure rotational--structure rotational sum rule rotational sweep rotational symmetrical luminous intensity distribution [of a source] rotational symmetrical luminous intensity distribution[of a source] rotational symmetrical luminous intensity distribution{of a source} rotational symmetry rotational temperature rotational transform