The decisive factor is that the differentiation is not based on a sample over a discrete time period, but is a physical effect, so that the user sees a dynamic, low-noise acceleration signal.

决定性的因素是这种区分是没有根据的样本离散多时间，但它是一个物理作用，使用户会看到一个充满活力，低噪声加速度信号。

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Netflix is trying to differentiate itself with its content, but over time that differentiation could be difficult to maintain.

FORBES: After Netflix's Huge Run The Market Has Overshot

The precise ethnic groupings which exist in a State, the significance of ethnicity for social participation in societal institutions and the processes through which ethnic differentiation is constructed and maintained may vary considerably between individual States, and over time.

UNESCO: Social and Human Sciences