Original: Unlike the Hilda asteroids whose eccentricity is fairly typical of main belt asteroids, Thule has a very low eccentricity - actually much lower than that of Jupiter itself and only slightly higher than that of Earth.
Simplified: Unlike the Hilda asteroids whose eccentricity is fairly common of main belt asteroids, Thule has a very low eccentricity - actually much lower that that of Jupiter itself and only a bit higher than that of Earth.