Learn to say before you sing
按部就班
ascertain the responsibility
判明责任
Learn to walk before you run
按部就班
ascertain our position
查核我方情况
investigate and ascertain
查究
ascertain a person’s antecedents
查明来历
ascertain the reason for a defect
查明缺陷原因
learn wildly from other’s strong points
博采众家之长
ascertain the true situation
查明真实情况
Learn not and know not
不学无术
ascertain criminal facts
查清犯罪事实
Learn from past mistakes to avoid future ones
惩前毖后
ascertain the yin or yang
分阴阳