smileless

例句：

1. 1. The child was smiling when he saw his parents.
   孩子看到父母时笑了。
2. 2.She looked at him with a smileless face.
   她看着他，脸上没有笑容。
3. 3.The news made her smileless and silent.
   这个消息让她面无表情、沉默不语。