您可以使用正则表达式:
string s = "The quick /little brown/ fox";
string[] result = Regex.Matches(s, @"((/.+/)|(\b\w+\b))").Cast<Match>().Select(m => m.Value).ToArray();
result.ToList().ForEach(x => Console.WriteLine(x));
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输出:
The quick /little brown/ fox