AJAX technologies allow to considerably reduce traffic by updating a part of the page without its full reloading.

Ajax的技术，让大大减少交通所更新的一部分，该网页没有充分换料。

You might say, "Yes, it will be tough to reduce traffic congestion on Main Street, but there are successful models we can look at."

你可能会说：“是的，这将会很难去在主干道上减少交通拥堵，但是仍然有我们可以关注的成功模型。”