"Lone warrior" or "solitary warrior" are both acceptable translations for "孤独的战士" in English. However, it's worth noting that the word "孤独" can have different connotations depending on the context in which it is used. For example, "孤独" can mean "lonely" or "isolated" in some cases, but it can also mean "solitary" or "self-sufficient" in others. The appropriate translation will depend on the specific meaning intended by the person using the term.
