be swimming in somethingLIQUIDto be covered by a lot of liquid 浸 [泡]在某物里 potatoes swimming in thick gravy 浸在浓稠肉汁里的马铃薯
be swimming in something• The only Italian food we'd ever heard about was a bowl of spaghetti swimming in tomato sauce.
→ be swimming in something at swim1(1)