concierge 这个在 日语 里怎么说？

查看来自AI monga的回答

Formal Japanese:
```
コンシェルジュ
```

Casual Japanese:
```
コンシェルジュさん
```

Explanation:
In the formal translation, "コンシェルジュ" is used, which directly translates to "concierge" without any additional suffix or honorific. This is a neutral and professional way to refer to a concierge.

In the casual translation, "コンシェルジュさん" is used. Adding "-さん" at the end makes the term more friendly and approachable, suitable for casual conversations or when speaking in a more relaxed setting.