These suits are designed to protect the wearer from cold shock as they enter the water.

这些服装旨在避免穿戴者入水时发生冷休克。

《柯林斯英汉双解大词典》

The water was so cold, we were in complete shock. Our first thought was to try to flip the boat back over.

身处冰冷刺骨的海水中，我们都吓呆了，第一个念头就是把船翻过来。

youdao

I feel the shock of the water, rise up through a thick, cold glue, then dive back with my ears ringing, my nose streaming, and the taste of salt in my mouth.

我感到水的冲击，然后浮出水面，好像摆脱了一种粘稠而冰冷的胶水； 接着我又跳回水中，我耳鸣、流鼻涕、嘴里都是海水的咸味。

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In one unusual but revealing study, his researchers repeatedly immersed one side of people's bodies until it showed evidence of habituation, while keeping the other side warm -- and then turned them over and immersed the side that had never been in the cold water and found that there was still a significant reduction in their cold shock response.

CNN: Are polar bear plunges good for you?

When people first immerse themselves in such frigid water, their bodies go into "cold shock, " and they start gasping for air, which puts a strain on the heart.

CNN: Are polar bear plunges good for you?

Tipton, who conducts research on the human body's physiological and psychological response to adverse environments, found that it takes as few as five immersions in icy water for the body to develop a tolerance that can reduce the risk of cold-shock response by half.

CNN: Are polar bear plunges good for you?