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无霜期 wúshuāngqī
agric. frost-proof date; frostless period; length of frost-free season (间); length of frost-free period (间)
desert. frost-free days (period); frost-free season
hydroel.st. frost-free period; frostless season; non-frost period; duration of frost free period
tech. duration of frost-free period; frost-free growing season
无 霜期: 8 phrases in 3 subjects
Agriculture4
Desert science1
Technology3