问如何以编程方式将LINQ查询转换为正确描述linq表达式的可读英文文本？

EN

class Purchase
{
    public decimal Price {get;set;}
    public string Description {get;set;}
}

var purchases = new List<Purchase>() { new Purchase() { Price = 150, Description = "Flute" }, new Purchase() { Price = 4711, Description = "Bike" } };

Expression<Func<IEnumerable<Purchase>>> queryExp = () => from p in purchases
    where p.Price > 100 && p.Description != "Bike"
    select p;

ExpressionSerializer serializer = new ExpressionSerializer();
XElement queryXml = serializer.Serialize(queryExp);