The first phase was exploration: finding out what works and what doesn't in terms of accessibility.

第一个阶段是探究：依据易访问性找出什么行什么不行。

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Physical exploration, the phase that follows, involves determining the extent, shape, and probable value of the mineral deposit.

随后的物理勘探就是为了测定矿床的范围、形状及概值。

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Recycling of waste concrete is still in the pilot phase of exploration in our country, testing research of recycled concrete has important theoretical and practical value.

废弃混凝土的再生利用在我国还处于探索试验阶段，对再生混凝土进行试验研究具有重要的理论意义和实用价值。

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We want and need a mix of individuals and skills for this next phase of human exploration.

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The Operations and Checkout building will soon serve as the final assembly facility for the Orion capsule during NASA's next phase of space exploration, the Constellation program.

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Pacific Rim acquired a firm that already had an exploration permit, a sort of phase-one permit in the mining world that allows companies to explore an area and determine whether mining would make sense there.

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