Translation of "Dardeja" in English

Qual a serpente que de plantas venenosas / empachada passou todo o inverno enterrada / e agora volta à luz do dia em nova pele, / e, rejuvenescida, as lisas roscas / desenrola, a cabeça erguendo ao sol, / enquanto a língua trífida dardeja.

As when a snake, that through the winter's cold / lay swoln and hidden in the ground from sight, / gorged with rank herbs, forth issues to the light, / and sleek with shining youth and newly drest, / wreathing its slippery volumes, towers upright / and, glorying, to the sunbeam rears its breast, / and darts a three-forked tongue, and points a flaming crest.