复式三中三计算公式6个数简介：The classroom was noisy, and everyone was chattering about the summer vacation. The excitement of youth was mixed with the breath of hormones, and the conversation between the two was drowned in this lively classroom.
The classroom was noisy, and everyone was chattering about the summer vacation. The excitement of youth was mixed with the breath of hormones, and the conversation between the two was drowned in this lively classroom.
