The temperature at night is -3 degrees, and the temperature is 7 degrees at noon during the day. What is the temperature difference between day and night?
某天晚上的温度为-3度，白天中午为7度，白天与晚上温差是多少度．
<gadget id="calculator">7 - (-3)</gadget>
<output>10</output>

<result>10</result>