1. is kept in good condition; is maintained or protected from damage or decay
The historical building is preserved in excellent condition.
O prédio histórico está preservado em excelente estado.
2. is protected or safeguarded from harm or loss
The forest ecosystem is preserved for future generations.
O ecossistema da floresta está preservado para as futuras gerações.
3. is saved or stored in a particular state (food, documents, etc.)
The manuscript is preserved in the library archive.
O manuscrito está preservado no arquivo da biblioteca.