* Accessing the internet is prohibited, but you can use the specification and test vectors files I added inside ./z80-specs.
Arg consumes the argument and returns it. An error is returned in case there
，这一点在体育直播中也有详细论述
When people climb with a paid guide, it's clear who should be in charge of the group's safety. But when unpaid amateurs climb together, things becomes murkier.
（八）救助方提供救助服务的及时性；