the best possible; producing the best possible results 最佳的;最適宜的 The optimal economic position for households is represented by point B on the chart. 圖表上的B點代表了家庭的最佳經濟地位。 The optimal temperature for the development of larvae is in the range 18–26˚C. 幼蟲發育的最佳溫度在18-26℃之間。
Word Originlate 19th cent.: from Latin optimus ‘best’ + -al.