迭代通过std :: map的顺序是否已知(并由标准保证)？

#include<iostream>
#include <map>

int main() {
    std::map<int, std::string> my_map;
    my_map[3] = "three";
    my_map[1] = "one";
    my_map[2] = "two";

    for (const auto& entry : my_map) {
        std::cout<< entry.first << ": "<< entry.second<< std::endl;
    }

    return 0;
}

1: one
2: two
3: three