俟机

na.wait for an opportunity

na.1.wait for an opportunity; watch for one's chance

1.The fighter would stay close to the ground, rolling, leaping and shifting, and wait for an opening to attack his opponent's lower body.不论是地堂拳、地堂刀，还是地堂剑，都是在地下翻滚腾挪，俟机攻敌下盘。