Each time he finished a cigarette, an arm reached out and replaced it, dense puffs of gray smoke following moments later.
每当他抽完一根，都会伸出一只手换一根新的烟上去，把之前的烟灰抖掉，缭绕着一股灰色的烟。
Gray clouds billow through the streets of the financial district and shroud the 16 acres where the towers had stood just moments before.
灰色的烟尘浪涌的通过了金融区街道并且覆盖了16英亩双子塔曾经站立的位置。
The use of moments for image analysis is straightforward if we consider a binary or gray level image segment as a two-dimensional density distribution function.
若把二值图或灰度图看作是二维密度分布函数，就可把矩技术应用于图像分析中。
I do not know if this is experimentally verifiable, but I have found that just remembering in detail those moments when I have felt high, vibrant and OK can lift me up out of the gray soup for a time.
我不知是否能用实验的方法来证实。但我发现当我热情高涨，富有活力，感觉良好时，详细的回忆起这些好的时候能使我在一段时期内摆脱这些痛苦的事情。
I do not know if this is experimentally verifiable, but I have found that just remembering in detail those moments when I have felt high, vibrant and OK can lift me up out of the gray soup for a time.
我不知是否能用实验的方法来证实。但我发现当我热情高涨，富有活力，感觉良好时，详细的回忆起这些好的时候能使我在一段时期内摆脱这些痛苦的事情。
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