大学英语：rare adj. 稀有的，难得的

These animals are so rare that I would do whatever I can to save them.〔这些动物很稀有，我会尽我所能去保护它们。〕

On the rare occasions when the old lady had any post， the little boy downstairs would go and get it for her.〔老太太难得有信，只要有信总是楼下的小男孩帮她去拿。〕

Snow is rare in this part of China.〔中国的这个地区难得下雪。〕

It is very rare for him to say “Sorry” to any others.〔他难得会对任何人说“对不起”。〕

Believe it or not， she is a rare beauty.〔信不信由你，她是一个百里挑一的美人。〕

a rare word〔冷僻的词〕　 　rare metals〔稀有金属〕

a rare disease(罕见的疾病)　　a rare medicinal herb〔珍奇药草〕