Spring is one of the four temperate seasons, the transition period between winter and summer.
天是一个温和的四个赛季中，冬季和夏季之间的过渡时期。
OBJECTIVE To investigate the relationship between bacterial infection number in hospitals and different seasons.
目的为了研究医院感染人数与不同季节的关系。
Objective To study the relationship between motion development of infants and their birth seasons.
目的研究婴儿出生季节与动作发育的关系。
Objective To study the relationship between motion development of infants and their birth seasons.
目的研究婴儿出生季节与动作发育的关系。
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