词汇	善防
释义	善防 shàn fáng好的堤防。
随便看	plain filling soil plain fill returning hole plain film plain film appearance plain film examination plain film holder plain film mammography plain film of kidneys、ureter and bladder plain film of vertebra plain film radiography plain filter plainfin plain fin plain finish plain finish concrete Plainfin midshipman plain fissure bur plain fit plain fixed gap gage plain fixed gap ga-ge plain fixed gap gauge plain fixed gap ga-uge plain fixing bath plain flange Plain-flanked Rail