non-botanist       
noun [ C ] uk/ˌnɒnˈbɒt.ən.ɪst/ us/ˌnɑːnˈbɑː.t̬ən.ɪst/
 非植物学家
a person who is not an expert on the subject of botany (= the scientific study of plants)
  The book is an excellent introduction for a non-botanist.
 Few of these plants will be familiar to a non-botanist. 不是植物学家,基本上完全不会认识这些植物。 
  - More examples
 - The text is aimed at the layman, and it should be accessible to the non-botanist.
 - The descriptions are clear and easy to understand, which is important for the nonbotanist.
 - She spent years teaching botany, often to non-botanists.
 - The use of all these Latin terms can be very confusing to the non-botanist.