He braced himself for the icy plunge into the black water.

他准备跳入冰冷的黑水。

《柯林斯英汉双解大词典》

These swimmers, who called themselves the "the Walruses", waited for their turns to plunge into the icy water.

这些自称为“海象”的泳客在轮流等待着跳入冰冷的水中。

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Still, regular polar bear swimmers insist they feel better after their dips, describing the invigorating rush they experience when they plunge into icy water.

CNN: Are polar bear plunges good for you?

Water cascades down the side of the mountain, providing hikers with a refreshingly icy plunge into the swimming hole below.

BBC: The Philippines�� secret sanctuary