这种罕见疾病发病率很低,因此早期诊断并不容易。Zhè zhǒng hǎnjiàn jíbìng fābìnglǜ hěn dī, yīncǐ zǎoqī zhěnduàn bìng bù róngyì.The incidence of this rare disease is very low, so early diagnosis is not easy.
南方今年冬天下了一场罕见的大雪。Nánfāng jīnnián dōngtiān xià le yì chǎng hǎnjiàn de dàxuě.The south had a rare heavy snowfall this winter.
在城市里,这样安静的夜晚已经很罕见了。Zài chéngshì lǐ, zhèyàng ānjìng de yèwǎn yǐjīng hěn hǎnjiàn le.In the city, quiet evenings like this have become very rare.