command+shift+control+3截取全屏幕存在剪貼板,command+shift+control+4選擇區域截圖存在剪貼板,command+shift+control+4選擇區域截圖存在剪貼板,command+shift(+control)+4時對準窗口按空格鍵可以選擇窗口截圖。command+shift+control+3截取全屏幕存在剪貼板,