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词汇 air-stone
释义

Definition of air-stone in English:

air-stone

noun
  • A porous block used to diffuse air in a fish pond, aquarium, etc.

Origin

Early 17th century; earliest use found in Thomas Wright (d. 1624).

Definition of air-stone in US English:

air-stone

noun
  • A porous block used to diffuse air in a fish pond, aquarium, etc.

Origin

Early 17th century; earliest use found in Thomas Wright (d. 1624).

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