extrapolation

n. 外推法,推断

extortion, extortionate, extortionately, extortioner, extortionist, extra, extra-, extra-curricular, extra-marital, extra-sensory perception, extract, extraction, extractor, extradite, extradition, extramural, extraneous, extraordinarily, extraordinary, extrapolate, extraterrestrial, extraterritorial, extravagance, extravagant, extravagantly, extravaganza, extreme, extremely, extremism, extremist, extremity, extricable, extricate, extrinsic, extroversion, extrovert, extroverted, extrude, extrusion, exuberance,