Impact of less-than-normal precipitation on sediment reduction caused by comprehensive harnessing in tributaries in section of northwestern Shanxi province of Hekouzhen-Longmen reaches of Yellow river是什么意思_Impact of less-than-normal precipitation on sediment reduction caused by comprehensive harnessing in tributaries in section of northwestern Shanxi province of Hekouzhen-Longmen reaches of Yellow river在线翻译_英语_读音_用法_例句