1. 〔摂氏〕zero;〔華氏〕32 degrees Fahrenheit;〔氷点〕the freezing point
    • 今朝は零度以下に下がった
    • It [The temperature] fell below zero [the freezing point] this morning.
    • 温度を零度[零度以上]に保つ
    • keep the temperature 「at zero [above zero]
    • 零度以下の気候
    • a subzero climate
    • 絶対零度
    • absolute zero