"We've also got these big tanks full of oxygen and nitrogen, which are mixed to make air, and also water, so that we can provide everything that the astronauts need in the crew module to keep them alive on their journey."
以实干出政绩，干在实处方能走在前列。
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Even though Langley has had two new hips in the last three years he said: "I was like a caged lion for months, because I can't sit still. Now that we're going again I'm ready."