An important character of radiation is that it can occur in a vacuum.

辐射的一个重要特点是它能够出现在真空里。

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China has and continues to experience lots of growth, but that did not occur in a vacuum.

中国曾经、并且在未来还会继续保持强势的经济增长，但这并不是发生在真空里的事。

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"Commuting doesn't occur in a vacuum ," said Naveen Lamba, IBM's global intelligent transportation expert, in a statement.

IBM全球智能交通专家纳文·兰巴在声明中说：“通勤与其它因素互相影响。”

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Modernization cannot occur in a vacuum nor can it be addressed in a piecemeal fashion.

FORBES: Russian High Tech in Focus at St. Petersburg Forum

The pattern of obstruction of justice, false statements and misuse of executive authority in the Lewinsky investigation did not occur in a vacuum.

CNN: Transcript: Judiciary Committee impeachment hearing

Such widespread police reform did not occur in a vacuum, but in an environment of real people with genuine concerns and expectations, he said.

BBC: NEWS | UK | Northern Ireland | Policing changes 'will be achieved'