1.思考:可以用词组ponder on或think over表达。
2.对敌我双方的情况调查清楚:可译为investigation of situations on both sides。
3.提出:可译为put forward或come up with。
4.知彼知己,百战不殆:可译为Know the enemy and know yourself, and you can fight a hundred battles with no danger of defeat。
5.攻其无备,出其不意:即“在对方没有准备好的时候进攻,在出乎对方意料的 情况下采取行动”,故译为Attack him where he is unprepared, and act where he is unexpected.
adj. 想不到的,意外的