痛苦的表情用英语怎么说？

痛苦的表情

例句

• But can we see pain in nonhuman faces? 但是我们能否在动物脸上发现痛苦的表情 呢 ?
• ...the agonised look on his face. 他脸上极其痛苦的表情
• The wretched look on the little girl's face made him sorry. 小女孩脸上痛苦的表情让他很难受。
• She started to sit up, grimaced, and sank back weakly against the pillow... 她坐了起来，露出痛苦的表情，又有气无力地倒在枕头上。