El Niño
(pharmacology) A semisynthetic derivative of erythromycin.
An invasion of warm water into the surface of the Pacific Ocean off the coast of Peru and Ecuador every four to seven years that causes changes in local and regional climate, associated with a positive anomaly.
A material that inhibits corrosion of a metal surface by increasing its passivity
(historical) A powerful Mongolic kingdom established by nomadic tribes related to the Xianbei in the Qilian Mountains and upper Yellow River valley.
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DiQt（ディクト）
無料
★★★★★★★★★★
