take a cold shower
US /teɪk ə koʊld ˈʃaʊər/
UK /teɪk ə koʊld ˈʃaʊər/

1.
洗冷水澡, 沖冷水澡
to wash oneself with cold water, often to refresh or invigorate
:
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After a long run, I always take a cold shower to cool down.
長跑之後,我總是洗個冷水澡來降溫。
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Some people believe that to take a cold shower in the morning boosts their immune system.
有些人認為早上洗冷水澡可以增強免疫系統。