act as the occasion requires;adapt oneself to circumstances;adaptableto changing circumstances; follow a flexible course of action; not bound by old rules ❍ 满朝大臣中没有一个人在做事干练和～上能比得上杨嗣昌的。(姚雪垠《李自成》 Ⅱ—32) None of the ministers in the court couldbeat Yang Sichang in capability and experience and in adapting themselves to circumstances. ❍ 他接到的指示是：“～，相机行事。”The written instruction he received read，“A dapt yourself to circumstances and act as the occasion demands.”
通权达变tong quan da bian
be flexible and untrammeled by conventions
通权达变tōnɡ quán dá biàn
权：变通；达：通晓、懂得。形容为了适应客观情况的需要，打破惯例，灵活办事。adapt oneself to circumstances, act as occasion requires, not bound by old rules