因为或者在英语中是一个模棱两可的词，意思可能是或者，也有可能不是全部。

Because or is an ambiguous word in English it can mean either or, it can mean not both.

youdao

如果有不明白和模棱两可的地方一定要弄清楚他们尤其是有意思冲突的地方，越多明确要比越少明确更好。

If there is any chance of misunderstandings and ambiguious titles make sure to get rid of them or specifiy explicitly what is meant. Being more specific is usually better than being less specific.

youdao

标点的使用让句子意思模棱两可。

The odd punctuation makes it unclear what this means.

youdao