现在，服务器可以异步通信，因此不必重新请求整个页面。

Now the server can be contacted asynchronously, thus the entire page does not have to be re-requested.

youdao

浏览器会尝试化We b流量，所以如果您对同一个URL请求两次，很可能还不如重新请求一次页面，您的浏览器将仅仅使用浏览器缓存中存储的页面。

Browsers attempt to optimize Web traffic, so if you ask for the same URL twice, it's likely that rather than request the page again, your browser will simply use the page stored in the browser cache.

youdao

它要求重新谈判合同的请求被拒绝了。

Its appeal to renegotiate the contract had been rejected.

youdao