degree作为温度可以单数可以复数 如:
Water will boil at 212 degree Fahrenheit and freezes at 32 degree Fahreneheit.In Celsius,it boils at 100 degrees and freezes at 0 degrees
但习惯用法是:
一度或零下一度不加s 如:1 degree Celsius
其他数值一般都加 如:0 degrees Celsius minus 5 degrees Celsius