The sands of time are running out for the central star of this hourglass-shaped planetary nebula.

在这一酷似沙漏形状的星云内，“时间之沙”即将从中央星之中流逝殆尽。

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The sands of time are running out for the central star of this hourglass-shaped planetary nebula.

在这一酷似沙漏形状的星云内，“时间之沙”即将从中央星之中流逝殆尽。

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