tần tảo

Etymology 1
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Adjective

 * 1) contriving well
 * 2) diligent and parsimonious; economical; thrifty; saving up

Etymology 2
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Noun

 * 1)  a type of algae, often used in antiquity for rituals
 * 2)  a kind of sacrificial offering
 * 3)  women's virtues