arrowing：【春江水暖鹅先知～】－春天首日今开始～

送交者: arrowing 2014年03月20日14:42:30 于 [高山流水] 发送悄悄话

【2014－03-20 the first day in spring】     春分 秋分 昼夜相庭。 看来老美是以春分为 春天的第一天 spring equinox   春分 在中国是 农历二月廿1日（明天）  2014－3－21   The season officially begins at 12:57 p.m. ET on March 20 — a precise and fixed point in time defined as when the center of the sun passes directly over the Equator. (See "Vernal Equinox Pictures: First-Day-of-Spring Celebrations.") But biological signs of spring’s arrival are a different science, defined by the timing of events—such as the first appearance of flowers — that change from year to year and place to place.

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