The existence of the silt area in the back of the Yellow River dikes is of great significance to preventing flood and keeping security of Yellow River.
黄河淤背区的存在，对确保黄河防洪安全有着重要意义，但淤区的水土流失现状堪忧。
One is the exact date of origin of Chinese history, the other is the existence of the Yellow Emperor.
一是中国信史发轫的准确年代，一是黄帝是否确有其人。
The simplified diagnostic criteria were characterized the co-existence of yellow and greasy tongue fur and fullness or distension or pain in the stomach.
简化诊断标准为：同时具备舌苔黄腻和胃脘痞满或胀或痛，即可诊断。
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