蒙古人种的眯缝眼是对雪地气候的适应，如果不够迷，还可以想因纽特人那样造一个眯眼镜Many Inuit groups made snow goggles to combat this issue, sometimes out of bone, ivory, antler, or wood, and carved them for use. Small slits reduce field of vision and amount of ultraviolet radi...