n.啞；無言；沉默
Dumbness,it feels the life of Jian and impermanency of people. 無言，感受劍的生命和人的短暫。
She replied after a meaningful dumbness. 她意味深長的沉默了一會兒才回答。
In particular, the dumbness would appear to be aggravated by stress. 特別是，壓力會讓沉默變得更為嚴重。
