As concerns demand: the world's population is set to increase from six to nine billion in 2050.

需求方面：世界人口将从60亿增加到2050年的90亿。

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Recent figures showed job creation at a standstill, as concerns grow over the possibility of a second recession.

最近的数据显示，由于担心经济可能陷入二次衰退，美国经济创造就业的步伐停滞不前。

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The report comes as concerns are growing about state-sponsored hacking and threats to critical infrastructure.

该报告的面世，使人们越来越多地关注到，国家资助的黑客组织对关键基础设施的威胁。

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Their concerns about profits are like the ones voiced as the Internet began to change the music industry.

VOA: special.2009.07.24

And a large part of social psychology concerns the way in which we present ourselves to other people so as to make the maximally positive impression even when that impression isn't true.

社会心理学中也有很大一部分内容,在关注我们向他人展现自己的方式,人们会尽力使积极印象最大化,即使留下的印象是虚假的。

耶鲁公开课 - 心理学导论课程节选

They note concerns that wild plants could, as a result,gain genetically engineered resistances.

VOA: special.2009.10.27

These groups should give themselves a pat on the back as concerns the Jewish vote.

FORBES: Would Gazan Rockets Have Rocked American Jewish Vote?

As concerns about the batteries have increased, the FAA has conducted extensive testing of their performance.

WSJ: Dreamliner-Like Batteries Raised Concerns

U.S. stocks fell as concerns about China's economic growth gave pause to a rally.

WSJ: What's News