A pond with a good supply of willow, poplar, and birch trees, is the perfect spot for a beaver family to set up its home.
一个有大量柳树、白杨和白桦树的水塘，是河狸家族的理想的安家之地。
The source(s) of water. For a given supply this could include municipal water, community well, private well, irrigation well, water course, cistern, reservoir, river, pond and lakes.
包括公用供水系统、公用井、私人用井、灌溉用井、水库、河流、池塘等。
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