阅读段落
Migratory beekeeping is nothing new. The ancient Egyptians moved clay hives, probably on rafts, down the Nile to follow the bloom and nectar flow as it moved toward Cairo. In the 1880s North American beekeepers experimented with the same idea, moving bees on barges along the Mississippi and on waterways in Florida, but their lighter, wooden hives kept falling into the water. Other keepers tried the railroad and horse-drawn wagons, but that didnt prove practical. Not until the 1920s when cars and trucks became affordable and roads improved, did migratory beekeeping begin to catch on.
段落大意
本段介绍了历史上的迁移养蜂经验。
阅读笔记
In history:
1. Ancient Egyptians.
2. In the 1880s of North America, hives kept falling into the water; railroad and horse-drawn wagons proved practical.
3. Until the 1920s cars and trucks became affordable and roads improved MB begin to catch on.
逻辑关系
1. 并列
ancient Egyptians moved clay hives, down the Nile to follow the bloom and nectar flow
North American beekeepers experimented with the same idea
not until the 1920s when cars and trucks became affordable and roads improved, did migratory beekeeping begin to catch on
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