Deliveries are expected to begin in 2010 and conclude in 2011.

预计交付工作将在2010年开始，并在2011年结束。

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Depending on the time and resources available and your confidence level, you can decide where the benchmarking exercise can begin and conclude.

根据可用时间和资源以及确信度，您可以决定基准确定工作的开始和结束时机。

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Most scientists conclude that catastrophic effects will begin to be felt once those levels pass 450.

很多科学家得出结论，一旦二氧化碳的排放量超过百万分之450，那么灾难性的影响将会显现。

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At some point people begin to conclude that you really are a secret mole on behalf of the fossil fuel industry.

FORBES: Is Al Gore A Fossil-Fuel Industry Mole?

The transition will begin in 2011 and conclude in 2014.

WHITEHOUSE: Press Briefing on Afghanistan-Pakistan Annual Review

We agreed that this transition to Afghan lead for security would begin in 2011 and that it would conclude in 2014.

WHITEHOUSE: President Obama Speaks at ISAF Meeting on Afghanistan