urban commercial building的用法和樣例：
例句
- Until now, making ice at night to provide daytime cooling was limited to large commercial buildings that used chillers.
以前用冰制冷僅限于大型商業(yè)建筑，到現在為止，較小的商業(yè)建筑和住宅也開(kāi)始試用了。 - In this picture, among many large commercial buildings, a college graduate is climbing upward with difficulty.
在這幅圖中，四周都是高聳的商業(yè)建筑，一個(gè)大學(xué)畢業(yè)生正在期間艱難的向上攀爬。
