The water is very cold.

那些水很凉。

youdao

Of course the water is very cold, but after a few seconds it seems to coat the body in a kind of warm silvery skin, as if one had acquired the scales of a merman.

海水当然很冷，但几秒钟以后貌似有一层温暖的银色肌肤裹住了我的身体，就像是穿上了美人鱼的鳞甲。

youdao

This is because the top of the troposphere is normally very cold, causing ascending water vapour to freeze into ice crystals that drift and fall, rather than continuing up into the stratosphere.

这是因为对流层的顶端通常极其寒冷，上升的水蒸汽凝结成飘落而下的冰晶，而没有继续上升进入平流层。

youdao

"What we are seeing in Iceland is that as the magma particles get towards the surface, they interact with the very cold water and they chill to form glassy fragments and these glassy fragments are small, they have sharp edges and when those get up in the air that is what is causing the risk to aviation."

VOA: standard.2010.04.15

"The water is obviously icy cold and people can die of hypothermia very quickly or drown if they are caught under the ice, " he said.

BBC: Heavy snowfall forecast overnight