西门

In a sentence

• 我在学校的西门等你。

  I am waiting for you at the west gate of the school.

  In this sentence, '西门' is used to refer to the west gate of a specific location, in this case, a school.

• 西门的风景特别美丽。

  The scenery at the west gate is particularly beautiful.

  Here '西门' refers to the west gate area as a notable or distinct location.

• 我们沿着西门那条路一直走，就能到市中心。

  If we walk along the road near the west gate, we'll reach the city center.

  In this example, '西门' is used to identify a landmark by which directions are oriented.