表情和神态的英文怎么说

表情 (expression) 是指人脸上所表现出来的情感或思想。神态 (demeanor) 则是指一个人在公共场合所表现出来的态度、风度或举止。

来源：

表情 (expression) 来自拉丁语 "expressionem"，意思是 "表示"、"阐述"。
神态 (demeanor) 来自拉丁语 "demean"，意思是 "举止"、"行为"。

一些例句和翻译：

She had a sad expression on her face. 她脸上有一种悲伤的表情。
He greeted me with a friendly expression. 他用友好的表情向我问候。
She has a calm demeanor, even in stressful situations. 即使在压力山大的情况下，她也保持着冷静的神态。
His arrogant demeanor made it clear that he thought he was better than everyone else. 他傲慢的神态表明他认为自己比其他人都优秀。