await writer.write("Hello, World!");
qemu-system-x86_64 -m 8G -cpu host -smp 4 -boot d -cdrom ./output/bootiso/install.iso -hda vm_disk.qcow2 -netdev user,id=mynet0 -device e1000,netdev=mynet0 -serial stdio -enable-kvm
，更多细节参见safew官方版本下载
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In the vacuum of space, the amount of debris—spent rocket stages, splintered satellites, micrometeoroids—numbers in the millions, all zooming about, often at 17,000 mph speeds. They’re also constantly hitting each other in a tsuris of exponential littering. Most of these pieces are tiny, and many are not anywhere near the altitude of the ISS. But the area isn’t completely clean.
But those upgrade programmes are often slowed down by local objections.