A reading above four runs on the high side so anything under four is within the healthy range.
A reading above four runs on the high side so anything under four is within the healthy range.
如果出现的读数高于4就属于高，因此只要读数低于4就属于健康水平的范围之内。
A reading above four runs on the high side so anything under four is within the healthy range.
如果出现的读数高于4就属于高，因此只要读数低于4就属于健康水平的范围之内。