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立冬標志著秋天的結束，

Beginning of Winter means that autumn has come to an end. 

在古籍中，秋天收獲的各種莊稼到了立冬都已經曬干儲存，動物紛紛躲起來，開始冬眠。

In the ancient books, all kinds of crops harvested in autumn have been dried and stored and animals have already hidden and started to hibernate during the season. 

立冬也意味著天氣越來越冷，所有生物新陳代謝減緩，躲避冬天的嚴寒。

At this time, the weather is getting cold and all the creatures have begun to slow down their rate of metabolism to keep themselves safe from the coldness in winter.