adj.不苟言笑的，表情冷漠的

She had an unsmiling face, indicating her disapproval of the situation.
她面无笑容，表示对这种情况的不满。
His unsmiling demeanor suggested he was not in the mood for jokes.
他严肃的表情暗示他此刻不想开玩笑。
The judge's unsmiling countenance made the defendants nervous.
法官冷峻的面容让被告们感到紧张。
Despite the celebration, she remained unsmiling, lost in thought.
尽管在庆祝活动中，她依然面无笑容，沉浸在自己的思绪中。
The unsmiling security guard made everyone feel uneasy.
面无笑容的保安让每个人都感到不安。
His unsmiling response to the good news puzzled his friends.
对于好消息，他的无动于衷反应让朋友们感到困惑。
The unsmiling teacher made it clear that discipline was paramount in her classroom.
面无笑容的老师明确表示，在她的课堂上纪律是最重要的。
The unsmiling photograph captured the seriousness of the occasion.
这张面无笑容的照片捕捉到了当时场合的庄重。
The athlete maintained an unsmiling focus throughout the competition.
在整个比赛中，这位运动员始终保持专注，面无笑容。
The receptionist's unsmiling welcome did little to alleviate my anxiety.
接待员冷淡的欢迎并没有减少我的焦虑。