Assets \ Scripts \ GameManager.cs(252,23):错误CS0104:“ Random”是“ UnityEngine.Random”和“ System.Random”之间的歧义引用


        void RandomlyPlaceApple()
        int ran = Random.Range(0, availableNodes.Count);
        Node n = availableNodes[ran];
        appleObj.transform.position = n.worldPosition;
        appleNode = n;

I've already added using Random = UnityEngine.Random; to the top of my code and no errors appear... but the apple doesn't appear either. I'm thinking something is wrong with my code but I can't find what, can someone please help me out?