the number of some animals is small they are in dinger.是什么意思（they are in a circle翻译）

the number of some animals is small they are in dinger翻译：一些动物的数量很小，他们在薛定谔例句:Some small animals have a spiny covering to protect them. 有一些小动物的身上覆盖了刺用来保护自己。