出单双出现规律的公式百度一下简介：Following the leader's command, everyone reined in their horses, jumped off the horses together, took off the various tools on their backs, performed their duties, and started digging at the slope in front of them.
Following the leader's command, everyone reined in their horses, jumped off the horses together, took off the various tools on their backs, performed their duties, and started digging at the slope in front of them.
