这是调用翻译类获取单词翻译的代码：

Translator Translator;
Translator = new Translator();
string chinesesmeaning=Translator.GetTranslate("Apple");//你要查询的英文单词，返回值是翻译结果

以下是通过C#爬虫获取有道上英文单词的翻译的类的代码：

class Translator{public string GetTranslate(string word){string trans = "";try{var url = "http://fanyi.youdao.com/translate?smartresult=dict&smartresult=rule";var headers = new WebHeaderCollection();headers["Content-Type"] = "application/x-www-form-urlencoded";headers["user-agent"] = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36";headers["Referer"] = "https://www.lagou.com/jobs/list_unity3d?labelWords=&fromSearch=true&suginput=";var dict = new Dictionary<string, string>()
{{"i",word },{"from","AUTO" },{"to","AUTO" },{"smartresult","dict" },{"client", "fanyideskweb" },{"salt","15808837717114" },{"sign","22a6ee9a07d4821f04e50bd029f73de0" },{"ts" ,"1580883771711" },{"bv","38c3ccbde2d50a86f0f9606d2be5a3d8"},{"doctype","json" },{"version","2.1"},{"keyfrom","fanyi.web"},{"action","FY_BY_REALTlME" }
};var str = PostInf(url, headers, GetPostArgs(dict));using (var dt = JsonDocument.Parse(str)){trans = dt.RootElement.GetProperty("translateResult")[0][0].GetProperty("tgt").ToString();}}catch(Exception ex){Unitily.Log(ex);}return trans;}/// <summary>/// 把字典转化为请求字符串/// </summary>/// <param name="dict">参数字典</param>/// <returns>返回请求字符串</returns>public static string GetPostArgs(Dictionary<string, string> dict){StringBuilder sb = new StringBuilder();bool first = true;foreach (var item in dict){if (first){sb.Append(item.Key);sb.Append("=");sb.Append(item.Value);first = false;}else{sb.Append("&");sb.Append(item.Key);sb.Append("=");sb.Append(item.Value);}}return sb.ToString();}/// <summary>/// 发送Post请求/// </summary>/// <param name="url">连接</param>/// <param name="headers">HTTP头</param>/// <param name="str">请求字符串</param>/// <returns>返回结果</returns>public static string PostInf(string url, WebHeaderCollection headers, string str){//创建HTTP请求var re = WebRequest.Create(url) as HttpWebRequest;//设置请求头//re.Headers = headers;re.ContentType = "application/x-www-form-urlencoded";re.UserAgent= "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36";re.Referer = "https://www.lagou.com/jobs/list_unity3d?labelWords=&fromSearch=true&suginput=";//设置访问类型为POSTre.Method = "POST";//写入请求信息using (StreamWriter sw = new StreamWriter(re.GetRequestStream())){sw.WriteLine(str);}//获取相应内容var ans = re.GetResponse();using (var st = new StreamReader(ans.GetResponseStream())){return st.ReadToEnd();}}}