你应该常备三角架，因为任何轻微的移动都会造成照片模糊不清。
You should always have a tripod since your photographs will come out blurry with any type of movement.
确定风险的方法应该明了，尤其是当没有其他选择而只能使用诸如小或轻微风险的模糊分类。
The method of ascertaining risks should be explicit, especially where there is no alternative to the use of such vague categories as small or slight risk.
首先必须声明，我没有配戴任何眼镜，因此会产生轻微的模糊视觉。
First, before everything, allow me the disclaimer that I was not wearing any glasses, and thus had slightly fuzzy vision.
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