barrel sponge

名词 n.
中文释义

英文释义

名词 n.
  1. A sponge of the genus Xestospongia, especially Xestospongia testudinaria.
    — In making use of something as simple as a difference in water speed, barrel sponges are exploiting energy from currents and tides that ultimately derive from the gravitational pull exerted by the Moon and Sun.

词形变化

barrel sponges plural
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