这就是症结：线程池大小限制了并发处理能力，而大部分线程都在无所事事地等待。
Start by checking your connections. If you have the AirPods or AirPods Pro, make sure the case is fully plugged in or properly set on the wireless charger (use Apple cables or Magsafe chargers if possible). Allow your AirPods to charge for at least 15 minutes. If you have the AirPods Max, allow them to charge for at least five minutes. Then, open the case and hold them near your iPhone or iPad. You should then see the charging icon appear when looking at the battery status. If that doesn't work, contact Apple Support.
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На шее Трампа заметили странное пятно во время выступления в Белом доме23:05
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Москвичи пожаловались на зловонную квартиру-свалку с телами животных и тараканами18:04，这一点在服务器推荐中也有详细论述