betray nothing in one’s expression and movements;without leaving any tell-tale traces ❍ 这时候，他可以不露痕迹地走了，因为当着朱瑞芳的面，没有什么好谈了。(周而复《上海的早晨》Ⅰ—473) Now he could get away without leaving any tell-tale traces,for there was nothing to stay and talk about with Zhu Ruifang sitting there.