河流环境是指河水所流经的空间环境，包括河床、漫滩、阶地、水体及水中所含各种物质（有机质、无机质和生物体）。
研究结果表明，该套砂体属于一种特殊过渡类型的河流环境的产物。
The results suggest that the sandstone body was a product of a fluvial environment of a special transitional type.
准噶尔盆地阜东斜坡区侏罗系砂岩储层为河流环境下形成的各类细粒岩屑砂岩。
The Jurassic sandstone reservoirs in Fudong Slope, Jungar Basin, are various fine_graded lithic sandstones deposited in a fluvial environment.
生物学家推测，最有可能的成因是太平洋洋流的变化，不过食物的取得、河流环境的改变、生物掠夺关系等，也都可能对鲑鱼造成影响。
Biologists speculate that the mostly likely cause was a shift in Pacific Ocean currents, but food availability, changing river conditions and predator-prey relationships could be affecting the fish.
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