现在是世界时间零点三十分。这里是特别英语的新闻。

It is zero hour thirty universal time. Here's the news in Special English.

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概述了精确获取测速雷达时间零点的重要性，分析了其对测速精度的影响。

This paper briefly introduces the importance of accurately determining time zero of a speed measuring radar, and discusses its effect on the accuracy of speed measuring.

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长征3 - A运载火箭于北京时间零点28分点火。火箭点火升空后24分钟与卫星分离。

The carrier rocket, Long March 3-a, blasted off at 0:28 a. m. (Beijing Time). The satellite separated from the rocket about 24 minutes later.

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If that's all it knows, then in that scenario there is no building or anything else; it continues a trajectory both forward in time and backward in time, and it says that whatever seconds, one second before you set your clock to 0, it would've been on the ground.

如果是这样,在那种模式下,没有楼房或者别的什么,物体的运动轨迹可以沿时间可以向后延伸,也可以向前延伸,不管时间取什么值,在零点前一秒时,物体就在地面上

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