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为了解江滩钉螺水淹后爬上树干的现象,我们选择望江县雷池、杨河江滩柳林为试区,进行树干和相应地面钉螺分布的调查和对比观察.
In order to understand the phenomenon of climbing up the trunk after the water snorkelling in the river beach, we selected Liqiu County in Wangjiang County and Liulin River in Yanghe River as the experimental area to investigate and compare the distribution of the snail on the trunk and the corresponding ground.