最后再强调一遍：蒸馏有用，但没有你们想象的那么有用。
if (arr[j] < pivot) break;
，详情可参考heLLoword翻译官方下载
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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.