溯本追源: trace to the beginnings; go back to the source [origins]
真正: genuine; true; real; really; indeed 短语和例子真正的朋友 a true friend; 真正地拥护 truly support; 真正负起责任来 shoulder the responsibilities in earnest; 真正实现 truly put into effect; 真正是这样。 it really is this wa
