When the Nile is in flood, it deposits a layer of mud on the fields.

尼罗河泛滥时，在田野上沉积下一层泥。

《新英汉大辞典》

Storing session state in the client using HTTP cookies or hidden form fields has significant security risks — it exposes a part of your application internals to the untrusted client layer.

在客户端用HTTP cookie或者隐藏表单字段存储会话状态有很大的安全风险——它将应用程序的一部分内部内容暴露给了非受信任的客户层。

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With different boundary layer schemes, the simulated divergence fields differ, which affects the performance of the rainfall forecast.

不同边界层方案模拟的辐散场有一定的差别，导致了降水的不同预报效果。

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The wide-ranging storm buried parts of the Midwest under more than a foot of snow, weakening as it moved east but still carpeting lawns and fields in a fresh layer of white.

WSJ: Storm blasts East with snow, cold; warmer Tuesday