【审时度势】〖shn shí duó shì〗[judge the hour and size up the situation; adopt a wait-and-see attitude; await the proper moment; observe the times and judge the occasion]

审慎行事著诗典，

时移事改汉英翻。

度德量力凝人类，

势在必行大同寰。

观察分析时势，估计情况的变化。Observation　analysis  current trend of events, estimate situation change.　　同：揆情度理、度德量力。反：刻舟求剑、墨守成规。