问解析返回的文本以获取特定的单词或短语集

EN

"red fox"
"brown dog"
"under the fence"
"actually know"

L.Any(x=>s.Trim().ToLower().IndexOf(x.Trim().ToLower())>-1)

void Main()
{
    var l = new List<string> {
                        "red fox",
                        "brown dog",
                        "under the fence",
                        "actually know"
                        };

    var s = "the red fox jumped over the brown dog under the fence, I don't actually know what the sentence is";
    s = s.Trim().ToLower();
    l.Any(x => s.IndexOf(x.Trim().ToLower()) > -1); // true

    s = "this is a sentence with no matches";
    s = s.Trim().ToLower();
    l.Any(x => s.IndexOf(x.Trim().ToLower()) > -1); // false
}