常見(jiàn)例句雙語(yǔ)例句The main reason of acid precipitation is the alkaline material of precipitation water has decreased in Leigong Mountains Nature Reserve.酸性汙染物來(lái)自中遠(yuǎn)距離傳輸，雷公山降水中堿性物質(zhì)較少，是降水呈酸性主要原因。 返回 alkaline reserve