expressionless

adj.

无表情的；

1. Her face remained expressionless.
   她的脸上仍然没有表情。
2. His recitation was almost expressionless.
   他的朗诵几乎毫无感情。

The Expressionless
Angular Forms and expressionless Pleasure
The Expressionless: Law, Ethics, and the Imagery of Suffering
The Expressionless Complex in Contemporary Chinese Oil Paintings
Adding Emotion to Expressionless Animations of Virtual Characters
THE EXPRESSIONLESS AS A PARADIGM OF INCOMPLETENESS. The Figuration of an antimetaphysical Universality by Walter Benjamin
System method for automatically detecting neutral expressionless faces in digital images
System and method for automatically detecting neutral expressionless faces in digital images
Similarity in emotional valence between an expressionless face and a frowning face - a comparison against a smiling face -
SiblingsDB - dataset of both high and low quality of (frontal, profile, smiling and expressionless) images of sibling pairs