free rider
A natural or artificial means for the removal of fluids from a given area by its draining away. / A system of drains. / A downward wind.
(pathology) Inflammation of the urinary bladder.
Someone who obtains goods or services legally without paying. / (economics) One who obtains benefit from a public good without paying for it directly.
(biochemistry) A glycosaminoglycan whose sulfated form is found in the cornea, cartilage, and bone
公共ラジオの番組の恩恵を受けながら、一度も寄付をしないただ乗りの人がいた。
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DiQt（ディクト）
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