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incontinence pad
My grandmother always carries an incontinence pad with her.
a greenhouse gas
Reducing greenhouse gas emissions is important for environmental protection.
cost-effectiveness, performance or quantity per cost
We need to evaluate the cost-effectiveness of this project.
(physics) photoelectric effect
The photoelectric effect is a phenomenon where a material emits electrons after absorbing light.
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DiQt（ディクト）
無料
★★★★★★★★★★
