検索
Era
01
時代
a period of history marked by particular features or events
02
ERA（防御率）
(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
03
時代
(geology) a subdivision of time that divides eon into smaller units
例
The fall of the Berlin Wall marked the beginning of a new era in European politics.
The discovery of penicillin marked the start of a new era in medical treatment and antibiotics.
The civil rights era marked an awakening in the struggle for racial equality and social justice in the United States.
The Victorian era saw the popularity of the victoria carriage among the upper class for its stylish design and comfortable seating.
The Restoration era witnessed the reestablishment of the monarchy and traditional forms of government.
