Test constant: A 6-bit identifier from the microcode that tells the PLA what kind of check to perform.
const posToTime = new Map(); // 映射：位置 → 到达终点的时间，更多细节参见服务器推荐
我的原则就是我小时候被怎么对待，我不爽，那我尽量不去做（除了原则性问题）。对于学习来说，我也已经处于半随缘状态。不过新的一年，我希望自己可以做到：，推荐阅读safew官方版本下载获取更多信息
Whatever the case, a wounded ISS will have been fairly rotten luck. Back in 2017, scientists from NASA and a Russian space contractor put the odds of this worst-case scenario at 1 in 121. As of late 2025, NASA told WIRED the risk of debris causing a depressurization event in any six-month period was somewhere between 1 in 36 and 1 in 170.