相机行事: act when the time is opportune; act according to circumstances; act as the occasion demands; do as one sees fit; take care of the matter as chance offers itself
巧妙: ingenious; clever 短语和例子巧妙的把戏 a clever trick: 巧妙拒绝 a diplomatic refusal; 巧妙的手腕 a happy knack; 伪装得很巧妙 cleverly camouflaged; 斗争艺术很巧妙 well-versed in the art of struggle; 巧妙的一步棋 a clever move;
