The Telomeres tend to become shorter over a person's lifetime, indicating the speed of the ageing process.
染色体端粒随着一个人的生命的延续趋于变短,这显示了老化过程的速度。
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A test coverage measurement is obtained by exercising a code base with a test harness and capturing data that corresponds to code having been "touched" throughout the lifetime of the test process.