fǎn zhì : rǎng xué : jiàn zhù > rǎng kōng 
mùlù
yīngwénjièshì
  1. :  soil air,  ground air,  soil atmosphere
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rǎng kōng kuò sàn rǎng kōng jiāo huàn rǎng kōng róng liàng
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