老师，有个问题，children[i]不是返回的游戏物体么，为什么if判断的时候是 if (children[i] != transform)，而不是 if (children[i] != Learn)，我不明白transform是游戏物体里面的组件啊

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Leran04_for_while : MonoBehaviour {

    // Use this for initialization
    void Start () {
        Transform[] children = transform.GetComponentsInChildren<Transform>();
        for (int i = 0; i < children.Length; i++)
        {
            if (children[i] != transform) {
                GameObject.Destroy(children[i].gameObject);
            }
        }
    }
    
    // Update is called once per frame
    void Update () {
        
    }
}