agile: implies dexterity and ease in physical or mental actions: ~ at answering questions on a variety of issues.   (dexterous娴熟轻松)


nimble: stresses lightness and swiftness of action or thought: a ~ tennis player.


brisk: suggests liveliness, animation, or vigor of movement sometimes with a suggestion of hurry: a ~ cleaning-up before the relatives arrived.    (标红live,anim,vigor都和生命相关)


spry: stresses an ability for quick action that is unexpected because of age or known infirmity: ~ older players beating younger opponents.


agile: 娴熟轻松，强调娴熟，nimble: 轻快(重量)轻松，强调轻快，brisk: 表示活力，有时表示匆忙，spry: 强调出乎意料的快速


记忆方法: 1) 首字母联想ANBS想成NBA Shooter一个NBA投球手<==动作敏捷

         2) 敏捷的意思是行动行为快速轻松mean acting or moving with easy quickness.首字母联想ANBS想成NBA Shooter一个NBA投球手<==动作敏捷            swift表示with ease，因此前两个词agile和nimble都表轻松，brisk强调活力，spry强调出乎意料