BEIJING, May 30 (Xinhua) -- The central parity rate of the Chinese currency renminbi, or the yuan, strengthened 59 pips to 7.1848 against the U.S. dollar Friday, according to the China Foreign ...

Insects rely on hundreds or thousands of small visual units working together to respond instantly to complex environments. Mimicking this, the team developed a compact 0.8-cubic-centimeter bionic ...

在.NET中，可以通过设置HttpClient类的Timeout属性来增加请求的超时时间。这样，即使网络延迟或服务器响应稍慢，客户端也能有足够的时间等待响应。 【csharp】 using System; using System.Net.Http; class Program { static HttpClient client = new HttpClient(); static async ...