Geneticists speak of the “molecular clock” that recordsthe passage of time. These molecular data also show how variousorganisms are transitional within evolution.

遗传学家所说的“分子钟（molecular clock）”记录了这一进程，这些分子数据也说明了进化中各物种的过渡关系。

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At this time in my life, it's a huge turning point, it's a transitional stage and I'm ready.

在我的生命中，这个时刻是一个巨大的转折点，这是过渡时期，我已经准备好了。

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Satisfied steady state performance and load robustness are shown in the simulation results and the transitional time response should be improved in further study.

结果表明用这种方法设计的控制器具有较强的稳态性能和负载鲁棒性，其过渡过程的时间响应有待进一步提高。

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The woman, who had a full-time job, stable child care and transportation, had been living in the transitional housing facility where Steinhardt worked.

CNN: Mom stands between families and homelessness