如何确定这个时间长度？
How did you pick this length?
youdao
祈祷的长度和频率又如何？
What is the length and frequency of the prayer?
如何初始化一个未知长度的数组？
How to initialize an array with unknown length?
端粒长度如何介导对健康的影响尚不清楚。
It is not clear how telomere length might mediate health effects.
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