食堂五楼在英语中可以说作 "cafeteria on the fifth floor" 或者 "fifth floor cafeteria."

这个短语的来源是由两个单词组成的："cafeteria," 这个单词来自拉丁文 "caupona," 意思是小酒馆，并在 20 世纪初被翻译成英文 "cafeteria," 意思是小型的自助餐厅或餐厅。"Floor" 这个单词来自中世纪拉丁文 "floris," 意思是花，后来被翻译成英文 "floor," 意思是地面，或者某一建筑物的楼层。

下面是一些例句：

"I'm going to grab some lunch at the cafeteria on the fifth floor." (我要去五楼的食堂吃午饭。)
"Do you want to meet me at the fifth floor cafeteria in half an hour?" (你想在半小时后在五楼的食堂见我吗？)
"I heard the fifth floor cafeteria has a new salad bar. Do you want to check it out with me?" (我听说五楼的食堂有新的色拉吧。你想和我一起去看看吗？)