At the start of daylight saving time, the clock time is advanced by the length of time specified in this property.

夏时制开始时，时钟时间将按此属性中指定的时间长度向前调整。

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At the start of daylight saving time, the clock time is advanced by the length of time specified in this property.

夏时制开始时，时钟时间将按此属性中指定的时间长度向前调整。

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