a freak of nature的用法和样例：
- A lamb with 2 tails is a freak of nature.
- A freak of nature produced the midsummer snow.
- He is so good at tennis, he's a freak of nature!
- She is so tall - she must be a freak of nature!
- The frog is so big that it has been described as a freak of nature.
- It was a freak of mine to wear pink pajamas.