「era」の発音の仕方

「era」の独自の発音を追加します

「era」の意味と定義

Noun

a period marked by distinctive character or reckoned from a fixed point or event

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Noun

a major division of geological time; an era is usually divided into two or more periods

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Noun

(baseball) a measure of a pitcher's effectiveness; calculated as the average number of earned runs allowed by the pitcher for every nine innings pitched

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