你将无法在进入触发时以 lightning 般的速度按下E键，当然你可以设法按下它，但这是最有可能的铁杆球员。如果你想使用输入，那么你需要更新它的每一帧：

//Called one frame when the trigger is entered
  private void OnTriggerEnter2D(Collider2D other)
        {
            if(other.CompareTag("Shop"))
            {
                ShopSR.sprite = ShopHighlighted;
            }    
        }
  //Called every time an object is in a trigger
  private void OnTriggerStay2D(Collider2D other)
        {
    
            if (other.CompareTag("Shop") && Input.GetKeyDown(KeyCode.E))
            {
                print("ENTER SHOP");
            }
        }

你可以这样做：

bool isOnShop;

    void Update(){
        if(Input.GetKeyDown(KeyCode.E) && isOnShop)
            // User is on shop, do your code
    }

    private void OnTriggerEnter2D(Collider2D other)
    {
        if(other.CompareTag("Shop"))
        {
            ShopSR.sprite = ShopHighlighted;
            isOnShop = true;
        }
    }

    private void OnTriggerExit2D(Collider2D other){
        isOnShop = false;
    }

或者使用OnTriggerStay2D遵循上述建议