public partial class Form1 : Form
{
public delegate void SayHelloDelegate(string name);

public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
//SayHelloDelegate shd = new SayHelloDelegate(SayHello.SayHelloChinese);

SayHelloDelegate shd = SayHello.SayHelloChinese;
shd += new SayHello().SayHelloEnglist;
shd("李四");
//new SayHello().SayHelloAllLanguage("张三","C");
}

private void button2_Click(object sender, EventArgs e)
{
SayHelloDelegate shd = new SayHelloDelegate(new SayHello().SayHelloEnglist);
shd("李四");
//new SayHello().SayHelloAllLanguage("张三", "E");
}
}

以上代码中

//SayHelloDelegate shd = new SayHelloDelegate(SayHello.SayHelloChinese);

这行new后面的代码是什么意思