如鱼得水的英语:feel just like a fish in water; as a duck takes to the water; as fish getting to the water; as if the fish had got into the water again; be in one's element; get along with one another swi...
如鱼得水的法语:être(heureux)comme un poisson dans l'eau;être dans son élément;se trouver dans un milieu propice