docker compose ps
// 易错点2：漏写stack.length判断 → 栈空时访问stack[-1]会报错，推荐阅读夫子获取更多信息
。51吃瓜对此有专业解读
While the rocket is inside, technicians will remove and inspect suspected helium system components, update any faulty hardware, and perform other work. That includes replacing batteries in the flight termination system — the emergency system that can destroy the rocket if it strays off course — swapping out a seal on the line that feeds liquid oxygen into the rocket, refreshing items inside Orion, and giving the closeout crew more practice sealing the capsule.，详情可参考搜狗输入法2026
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