The nebula is a large supernova remnant, an expanding cloud born of the death explosion of a massive star.

该星云是超新星的遗迹，是一个大质量的恒星死亡爆炸时的扩散云气形成的。

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The sad news of her father's death was the only cloud on an otherwise happy year.

她父亲的死讯是她愉快的一年中唯一伤心的事。

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The cloud of death, though misty, chill and cold.

死亡之云虽然寒冷阴沉。

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Barghoorn focussed on Australia, Cloud on Death Valley, others on China and Brazil, trailing graduate students behind them.

NEWYORKER: The Martian Chroniclers

In announcing his cloud-based startup, he predicted the death of traditional software.

FORBES: Marc Benioff to Write Age of Context Foreword