strat·a·gem
noun/ˈstrætədʒəm/
/ˈstrætədʒəm/
(formal)- a trick or plan that you use to gain an advantage or to trick an opponent
（为取胜或迷惑对手的）计策，计谋 - to adopt a clever stratagem
采取巧妙的策略 - He deployed various cunning stratagems.
他施展了各种狡猾的计谋。
Word Originlate 15th cent. (originally denoting a military ploy): from French stratagème, via Latin from Greek stratēgēma, from stratēgein ‘be a general’, from stratēgos, from stratos ‘army’ + agein ‘to lead’. - to adopt a clever stratagem