adj. supercooled
vt. undercooled
在夜晚温度过冷的地区，不允许他们被常年在外饲养，一个加热温室或室内设施是必要的。
In areas where the night temps are too cold or conditions don't permit them to be outside year round, a heated greenhouse or indoor accommodations are necessary.
研究者称，飞机飞行将云温推至临界点以下，为那些过冷的液态水提供了云形成的冰颗粒，使其凝聚冻结。
As planes push cloud temperatures past the tipping point at which supercooled water freezes, the aircraft "seed" the clouds with ice particles, the study says.
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