be thin

'Ser delgado' is a Spanish phrase that translates to 'be thin' in English. It can be used to describe a person, object or situation that has a slim, slender or lean appearance or constitution. The phrase utilises the verb 'ser' which indicates a permanent or long-term state, implying that the thinness is not a temporary condition or subject to change. Please note, Spanish is a contextual language, the meaning can slightly vary based on the context where it is used.