expressionless

adj not showing feelings, thoughts, etc （对感情、 思想等）不流露的; 没有表情的; 呆板的: an expressionless face, voice, tone, etc 呆板的面孔、 冷冰冰的声音、 平淡的声调等 * His recitation was almost expressionless. 他的朗诵几乎毫无感情.

explosively, exponent, exponential, exponentially, export, exportation, exporter, expose, expose to, exposed, exposition, expostulate, expostulation, exposure, exposure meter (also light meter), expound, express, expression, expressionism, expressionist, expressive, expressively, expressiveness, expressly, expressway, expressway (also throughway), expropriate, expropriation, expulsion, expunge, expurgate, expurgation, exquisite, exquisitely, exquisiteness, ext, extant, extemporaneous, extemporaneously, extempore,