春季：立春、雨水、惊蛰、春分、清明、谷雨； 夏季：立夏、小满、芒种、夏至、大暑、小暑； 秋季：立秋、处暑、白露、秋分、寒露、霜降； 冬季：立冬、小雪、大雪、冬至、小寒、大寒.

omg..all this are solar terms，the first sentence have thirteen solar terms spring begins，The rains,Insects awaken and so on.... 春 雨 惊 春 清 谷 each character means a solar term

春 雨 惊 春 清 谷 天， spring rain scare spring pure valley sky Spring rain alarms the freshness of the day in a spring valley (The freshness of a spring day is being alarmed by the coming of sudden rain) 夏 满 芒 夏 暑 相 连。 summer full awn (of cereal)/reeds summer heat mutual succession Summer full with reeds in aplenty, comes the heat in succession. 秋 处 露 秋 寒 霜 降， autumn place dew autumn cold frost descend In autumn, dew appears. Upon autumn's cold, frost will descend 冬 雪 雪 冬 小 大 寒。 winter snow snow winter, small big cold. Winter snow, snow in winter, coldness - both mild and severe.

simple spend. 春=春天=spring 雨=rain It meas the rain of Spring

I can translate the poet in a simple way: When the spring comes, It rains and make the sky blue and clean. When the summer comes, It is hot continuously for a long period of time. When the autumn comes, Dewdrops and frost come along. When the winter comes, Snow in winter comes by the solar term.