columnar epithelium的用法和樣例：
例句
- Simple columnar epithelium consists of tall, narrow cells having considerably greater height than width.
單層柱狀上皮由高桂狀上皮細胞組成，細胞的高度顯著(zhù)大于細胞的寬度。 - Epithelium also lines the air tubes and lung cavities.
上皮組織還襯蓋氣管和肺腔。 - Thus we find that they, too, arise from an epithelium.
因此我們發(fā)現，它們也起源于上皮組織。
