the best possible; producing the best possible results 最佳的;最适宜的 The optimal economic position for households is represented by point B on the chart. 图表上的B点代表了家庭的最佳经济地位。 The optimal temperature for the development of larvae is in the range 18–26˚C. 幼虫发育的最佳温度在18-26℃之间。
Word Originlate 19th cent.: from Latin optimus ‘best’ + -al.