No air bubbles were present in the green ice, suggesting that the ice was not formed from the compression of snow but instead from the freezing of seawater.
绿色冰层中不含气泡，这表明了这种冰层是由冻结的海水形成的，而不是凝结压紧的积雪。
2
It was an extremely cold winter's evening and freezing fog hung in the air.
那是一个极其寒冷的冬天的夜晚，空气中弥漫着冰冷的雾。
3
The farmers are also using large fans to circulate air over orange groves and prevent freezing.