tortuous;roundabout;circuitous;devious ～包抄敵人outflank the enemy/～前進(jìn)advance in a roundabout way; roundabout way of advance/～戰(zhàn)術(shù)outflanking tactics/～曲折full of twists and turns; in zigzags; circuitous;tortuous/～曲折的道路a tortuous and devious path;a zigzag path