在英语中，可以用短语“as rare as hen's teeth”来表达类似的意思。
这个短语中的“hen's teeth”指的是鸡牙齿，由于鸡几乎没有牙齿，所以用来形容某物的罕见程度也就非常合适了。
When we say something is "凤毛麟角" in Chinese, it means that the thing is extremely rare or precious. In English, a similar expression is "as rare as hen's teeth." This phrase refers to the fact that chickens almost never have teeth, so it perfectly captures the idea of something being very scarce.
For example, if you find a person who always speaks the truth no matter what, you could say that they are as rare as hen's teeth. Similarly, if you come across a vintage car that has been perfectly preserved, you might describe it as a "凤毛麟角" item. The phrase highlights the exceptional rarity and uniqueness of such things, just like the mythical creatures that are said to have feathers of a phoenix and horns of a kylin.