His dumbness means that he isn't interest in this kind of things.他的沉默表明他对这种事情不感兴趣.In particular, the dumbness would appear to be aggravated by stress.特别是, 压力会让沉默变得更为严重.We regard her dumbness as the acknowledgment.我们...

n.无言，沉默...

dumbness的音标：dumbness的英式发音音标为：[dʌmnəs]dumbness的美式发音音标为：[dʌmnəs]...