清晰地定义度量效果的标准并进行测量，但切忌不要让度量标准来驱动设计。
Clearly define metrics up front and measure against those. Don't let the metrics drive the design.
事实上，尽人皆知，安慰剂效果难以识别，衡量，以及被清晰地界定。
Indeed, the effect is famously difficult to identify, measure, and even coherently define.
像素响应时间也是等离子电视的一项主要优势：画面渲染快，降低了快速移动画面的模糊效果，提供了更清晰的画质。
Pixel response is also a key benefit to plasma televisions; their images are rendered quickly, countering image blurring effects of fast-moving images on screen, providing clear pictures.
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