如何在C++类的初始化列表中初始化member-struct？

#include<iostream>

struct MemberStruct {
    int x;
    int y;
};

class MyClass {
public:
    MyClass()
        : memberStruct_{1, 2} {
    }

    void print() const {
        std::cout << "x: "<< memberStruct_.x << ", y: "<< memberStruct_.y<< std::endl;
    }

private:
    MemberStruct memberStruct_;
};

int main() {
    MyClass obj;
    obj.print();
    return 0;
}