组选复式计算器简介：In the ordinary ward, the sun shines slantingly on the window sill, and there is a faint smell of disinfectant in the air. Although hydrogen peroxide can kill most germs, the smell is really not pleasant.
In the ordinary ward, the sun shines slantingly on the window sill, and there is a faint smell of disinfectant in the air. Although hydrogen peroxide can kill most germs, the smell is really not pleasant.
