名词
中文翻译：鼻下唇沟
同义词：
['philtrum', 'philtral fold', 'labial fold例句：1. The artist carefully painted the philtrum on her lips.（艺术家小心翼翼地在她的嘴唇上画了一道。）']
例句：
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1. The artist carefully painted the philtrum on her lips.
艺术家小心翼翼地在她的嘴唇上画了一道。
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2.The patient's philtrum was swollen and painful.
病人的唇下褶皱肿胀且疼痛。
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3.The philtrum is a delicate feature that can be easily damaged.
唇下褶皱是一个易受伤害的微妙特征。