Performance is made in accordance with agricultural seasons, usually on the "Spring Festival"or the "Lantern Festival".
表演的组织形式和活动的时间，都与农业生产的季节性相适应；农历的“ 春节”、正月十五的“灯节”
Every year, hundreds of thousands of agricultural machines are taken to different parts of China to serve agricultural seasons, like birds that migrate back and forth with the seasons.
每年都有数十万台农业机械像候鸟一样，在中国大地上往返迁徙。
Ancient agricultural civilizations observed the stars and then used those observations to keep track of the seasons.
古代农业文明观察星星并用来观测记录季节变化。
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