The lowest temperature in a day in a certain place is -2°C, and the highest is 10°C, what is the temperature difference in this day in degrees Celsius?
某地一天中最低气温是-2℃，最高是10℃，这一天的温差是多少摄氏度．
<gadget id="calculator">10 - (-2)</gadget>
<output>12</output>

<result>12</result>