be full of 是主动结构，be filled with 被动结构。be full of更强调状态，尤其强调“满满的”状态；be filled with更强调动态的过程。
This room is full of people.
这个房间人很多，很挤。
This balloon is filled with air.
这个气球是用空气吹的。
Her eyes were full of fire.
她的双眼充满激情的火花。
水利万物而不争,
而万物莫能与之争。
