扇形的

The bedrooms also have cross ventilation via fanlight windows above doors.

卧室则通过门上的扇形窗对流通风。

Note the clear vacuoles in the colloid next to the epithelium where the increased activity of the epithelium to produce increased thyroid hormone has led to scalloping out of the colloid.

临近上皮细胞的胶质清晰空泡，此处上皮组织细胞活跃，甲腺激素分泌增多，形成扇形的胶质边。