dermatology
The term 'dermatología' is a Spanish word which translates to 'dermatology' in English. Dermatology is a branch of medicine that concerns with the diagnosis and treatment of skin disorders. It might also include problems related to hair, nails, and mucous membranes. A person specializing in this field is known as a dermatologist. The word 'dermatología' in Spanish is used in the same context.
I study dermatology at the university.
This phrase is used when someone is communicating about their field of study at a university. The subject of the sentence 'Estudio' signifies that the speaker is the one doing the studying, and 'dermatología' is the object or the thing being studied. Note that in Spanish, it is common to omit the subject pronoun (I in this case) as it is implied by the verb's conjugation.
Dermatology is important for keeping skin healthy.
In this statement, the importance of the field of 'dermatología' (dermatology) is being emphasized. Here, it's in the construction of stressing the significance of dermatology to maintaining healthy skin. Note the structure: '<Field of study> es importante para <reason>'.
The dermatology book is in the library.
This sentence describes the location of a book about dermatology. 'El libro de dermatología' indicates 'the dermatology book', 'está' is a form of the verb 'estar' which is used to indicate location, and 'la biblioteca' means 'the library'. Thus, the whole sentence translates to 'The dermatology book is in the library'.