名詞 sponge:

1. a porous mass of interlacing fibers the forms the internal skeleton of various marine animals and usable to absorb water or any porous rubber or cellulose product similarly used
2. someone able to acquire new knowledge and skills rapidly and easily
   同義詞：quick study
3. a follower who hangs around a host (without benefit to the host) in hope of gain or advantage
   同義詞：leech, parasite, sponger
4. primitive multicellular marine animal whose porous body is supported by a fibrous skeletal framework; usually occurs in sessile colonies
   同義詞：poriferan, parazoan

動詞 sponge:

1. wipe with a sponge, so as to clean or moisten
2. ask for and get free; be a parasite
   同義詞：mooch, bum, cadge, grub
3. erase with a sponge; as of words on a blackboard
4. soak up with a sponge
5. gather sponges, in the ocean

1. It's a sponge.
   這是一塊海綿。
2. I am cooking a sponge cake with jam filling.
   我在做果醬松糕。