1、韬光养晦[词典]hideone'scapacitiesandbideone'stime;

2、[例句]经过十多年的审时度势，他的性格依然是那么让人捉摸不透，韬光养晦高深莫测。Aftermorethanadecadeofscrutiny,hisnatureremainsenigmaticandhisdepthsnotquitefullyfathomed.