agile: implies dexterity and ease in physical or mental actions: ~ at answering questions on a variety of issues.


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.


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(dexterous娴熟轻松2017-12-20)，强调娴熟, nimble: 轻快(重量)轻松，强调轻快；brisk: 表示活力(标红live,anim,vigor都和生命相关)，有时表示匆忙，spry: 强调出乎意料的快速（如老弱）


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.            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