Global GDP growth, after a robust eight-year stretch, is now set to contract by 1.7 percent this year, the World Bank predicts.

世界银行预测，全球GDP经过长达8年的强劲增长，目前预计今年会收缩1.7%。

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It's important that we stretch our muscles because they contract during exercise and the daily rigors of living.

拉伸我们的肌肉是很重要的，因为它们在运动和平时快节奏生活的中都会收缩。

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Besides it being a contract year, there's little reason to think Kaman will be healthy for any significant stretch.

除了明年是合同年之外，卡曼为了获得大合同没有理由不保持健康。

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The Darpa-supported team instead moved their machine by using an "artificial muscle" made out of nickel and titanium wire designed to stretch and contract with heat.

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