Isaacman pointed to hydrogen leaks on Artemis I and helium flow problems on Artemis II as signs that a three‑year gap between launches is not sustainable. When teams only fly every few years, he said, they lose "muscle memory" — the routine, hands-on experience required to handle a complex rocket safely and efficiently.
优势：时间复杂度O(n+k)，k为数据范围
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实现社会主义现代化是一个阶梯式递进、不断发展进步的历史过程，需要不懈努力、接续奋斗。
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