+save(item: Item)
qemu-system-x86_64 -m 8G -cpu host -smp 4 -boot d -hda vm_disk.qcow2 -netdev user,id=mynet0 -device e1000,netdev=mynet0 -serial stdio -enable-kvm
。heLLoword翻译官方下载对此有专业解读
self.config.sleep_min,
requestAnimationFrame
NeverEndingDClock