In an alternative embodiment, the payload may be secured outside the fuselage chamber, with the releasing mechanism secured within to release the payload after a pre-set time.

在可选实施例中，该载荷可被紧固在机身腔外部，其中：释放机构被紧固在内部以在预先设置的时间后释放载荷。

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When the pre-set time is up, the connecting passage is clear and the air-operated sounding element is forced to make sound by the airflow.

当达到预置时间时，连接通道畅通使气流作用于气动发声元件发声。

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The tweets have been set for pre-arranged intervals, to keep the service running to time.

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Consumers can also get creative with their video thanks to fun and unique features such as time lapse recording, which allows users to program the camcorder to record at a pre-set interval of one image every one, five, 10 or 30 seconds.

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