using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main()
    {
        List<string> list = new List<string> { "ABC", "DEF", "GHI" };
        string searchTerm = "AB";
        
        bool contains = list.Any(s => s.Contains(searchTerm));
        
        Console.WriteLine(contains); // 输出: True
    }
}