The index is the government's chief gauge of future economic activity.

这个指数是政府对未来经济活动的主要判断标准。

《柯林斯英汉双解大词典》

Bound to two atoms of oxygen, it creates carbon dioxide, the chief greenhouse gas that has kept our planet warm for billions of years - and is now, thanks to human activity, making us too warm.

碳原子和两个氧原子相结合组成了二氧化碳，是数十亿年来保持我们地球温度的重要温室气体。但是近些年来由于人类的活动，地球温度不断上升，导致温度过高。

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This activity occurred before the mobile phone hacking, at a time when Coulson was deputy and the editor was Rebekah Wade, now due to become chief executive of News International.

这些违法行为发生在“手机黑客”事件之前，当时Coulson是副总编，时任总编是Rebekah Wade（现将成为新闻国际首席执行官）。

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"It's simply unacceptable that the overwhelming majority of our young women are leaving school with dangerously low levels of physical activity, " said WSFF chief executive Sue Tibbals.

BBC: Health

Mehmet Ali Isikara, chief of the Kandilli Observatory, warned of "unusual" seismic activity near Istanbul.

CNN: Aftershock raises fears as Turkey quake toll reaches 7,000

Adam Hewison, president and chief strategist with INO and MarketClub.com, said the recent activity of the market making a high on Aug. 23, then breaking, making a new high on Tuesday, then breaking, should make investors cautious.

FORBES: FOCUS: Gold Nearing Important Technical Chart Support Levels