例句:

Even in winter, the temperature in Hong Kong is always above  zero.

句意:甚至在冬天,杭州的气温也总是在零度以上

表示温度的时候,温度以上用介词above温度以下用below。

低于用below

如:

The temperature is below freezing. 温度低于冰点

超过,高于用above

如:

Tonight, temperatures should be just above freezing. 今晚的温度应该稍稍高于零度

又如:

He was at 39℃ and had vomited twice. 他高烧烧到39度,已呕吐了两次。

The temperature crept up to just above 40℃. 温度攀升至40度出头。

The thermometer registered over 100℃. 温度计上显示的读数超过了 100 摄氏度。