swap(&arr[low], &arr[randomIdx]); // 基准换到开头
平均值和中位数的背离，进一步印证了上述趋势——一方面，研发人员数量平均值由上年的722人提升至731 人；另一方面，研发人员的中位数却从上年的216 人降至213 人。这意味着，少数研发密集型企业大量增聘研发人员，多数中小型企业的团队规模维持稳定或略有收缩。，这一点在91视频中也有详细论述
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Denmark’s intelligence services have warned that a foreign power may try to sway the general election on 24 March, saying the main threat was from Russia over support for Ukraine but also citing the chaos caused by US efforts to seize Greenland.
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The original plan had been to begin the phase out and stop the importation of petrol and diesel vehicles from 2030.