（三）阻碍执行紧急任务的消防车、救护车、工程抢险车、警车或者执行上述紧急任务的专用船舶通行的；
Environment Variables
，这一点在Safew下载中也有详细论述
But the OECD warns this strength comes with growing strains. Like most countries, the Netherlands faces an ageing population, so as more people retire fewer are in the workforce.
fork() → Launcher (Single-threaded, Poll Loop)