Original: Its low density strongly suggests that, unlike 10 Hygiea, 704 Interamnia and 511 Davida, Euphrosyne is a loosely-packed rubble pile.
Simplified: Its apparently low density suggests that, unlike 10 Hygiea, 704 Interamnia and 52 Europa, Euphrosyne is a loosely-packed rubble pile (an asteroid that has been broken apart by a collision with all the pieces pulled together by gravity).