基本解释蒸發異常英汉例句雙語例句In the region with more actual evaporation, PDSI describes the severity of drought more precisely than percentage of precipitation anomaly.在實際蒸發較大的地區，PDSI指數比降水距平百分率描述乾旱強度更準確。evaporation anomaly更多例句专业释义地球科學蒸發異常