The spacecraft Nasa is developing to replace the shuttle has passed a critical milestone.

美国航空航天局正在计划的用于取代旧航天飞机的新飞船已经通过审评。

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Each phase results in a critical milestone version of the system, as well as an evaluation of the phase and planning for the next phase.

每个阶段会得到系统的一个关键里程碑版本，并会对此阶段进行评估，并针对下一阶段进行规划。

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"This truly is a critical milestone on our road to success toward a full fleet introduction on Littoral Combat Ships," said Capt. Tim Dunigan, U.S. Navy.

美国海军Tim Dunigan上校说：“这将是濒海战斗舰编队一个重要里程碑。”

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Just this morning, the House of Representatives released its version of health reform legislation, and I want to commend Nancy Pelosi and the Democratic Caucus for their leadership in achieving this critical milestone.

WHITEHOUSE: President Obama Explains Why Health Insurance Reform is Crucial for Small Business | The White House

She said getting a diagnosis could be a critical milestone for children with autism and their families, often helping parents to understand their children better and helping them to support their children in reaching their full potential.

BBC: Children 'may grow out of autism'

Synopsys, Inc. (Nasdaq: SNPS), a global leader providing software, IP and services used to accelerate innovation in chips and electronic systems, today announced that its multi-year collaboration with Samsung on FinFET technology has achieved a critical milestone: the successful tapeout of the first test chip on Samsung's 14LPE process.

ENGADGET: Samsung reveals its first 14nm FinFET test chip, should offer substantial power improvements in future silicon