Once a new interval starts, the aggregate value counters are reset to zero.
当新时间间隔开始时，聚合值计数器将重置为零。
Starting an interval effectively starts a background process that modifies the property over the specified period of time.
启动一个间隔则会使一个后台运行的程序在一段时间后修改一个数值。
It is, rather, the last interval that starts before interval I finishes (they may or may not actually overlap).
它，相反，最后一个间隔开始之前我完成区间他们可能或不可能真的。
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