阶梯式倍投法简介：The two of them were standing next to a street vendor. Uncle Pan was in high spirits, with acne all over his face. Whenever his mood changes drastically, the acne and pimples on his face change like a barometer.
The two of them were standing next to a street vendor. Uncle Pan was in high spirits, with acne all over his face. Whenever his mood changes drastically, the acne and pimples on his face change like a barometer.
