Abstract: | Spring is one of the four temperate seasons, the transition (过渡、转变) period between winter and summer. Spring refers (涉及、暗指) to ideas of rebirth, renewal and regrowth. The specific definition (定义) of the exact timing of "spring" varies according to local climate (气候), cultures and customs. At the spring equinox(春分) , days are close to 12 hours long with day length increasing as the season progresses (推移) . |