Price drops and supply and found Austin, Texas is the fastest cooling metro area in the country.

价格下降，供应减少，发现德克萨斯州的奥斯汀是全国降温最快的地区。

The brain has to be kept somewhat cool, hair up there aids in cooling the area and protecting it and that's why they seem to be retained.

大脑必须保持一定程度的凉爽，那里的头发有助于冷却和保护该区域，这就是为什么它们似乎被保留下来。