A thicker swim cap (made of silicon as opposed to latex) might be preferable to keep the head warmer. Sometimes a swimming cap does not stay on very well and continually slips.

一个较薄的泳帽(由硅胶制成，而不是乳胶)可能是最好保护头部温度。

youdao

This means that as they head hundreds of feet up to the surface to feed each day, they're dragging along cold, nutrient-rich waters from the ocean deep, then pulling warmer streams back down.

这就意味着，它们每天冲上数百英尺到水面的时候，它们是拖着海洋深处冰冷的、富营养的水上来，然后将温暖的水流拉回水底。

youdao

Passing by several lanes, I felt a little warmer when I saw the sun shining on my head.

经过了好几个巷口，看到太阳在我的头顶上照耀着，我感到了一丝温暖。

youdao

Families with school-age kids often go away over the summer, and retired folks from the north like to head for warmer climes when the weather gets cold.

FORBES