是否有已经经过调查和测试的治疗法案？

Are there any remedies that have actually been researched and tested?

youdao

但是，有已经存在的特性，也就是所谓的History，现在可以与工作区一起使用，以提供对百科全书所作变更非常具体的视图。

However, there is a pre-existing feature known as History which can now be used in conjunction with Workspaces to offer a very detailed view of the changes that you have made to an encyclopedia.

youdao

在那里，他接触了在一线的人们，有已经战胜疾病的人，有每天都受到结核病威胁的儿童和青少年，还有那些创造历史、为防痨献出毕生精力的科学家。

There he met people on the front lines; people who have beaten the disease, children and teens who face the threat of TB every day and scientists who have dedicated their lives to making TB history.

youdao

OK, so we've got UV light here, and let's see what we can see, and we lose electrons, if that's what's happening.

好了，我们已经有了紫外光源，让我们来看看能观察到什么，如果那些事情发生了，我们将会失去电子。

麻省理工公开课 - 化学原理课程节选

We have got an extensive subway system and an extensive bus system that we have had for 60, 70 years.

我们有大规模的地铁系统和巴士系统，它们已经有差不多六七十年的历史了。

纽约的公共交通 - SpeakingMax英语口语达人

I haven't said how I'm going to get those sorted lists, but imagine I had two sorted lists like that.

我还没有说明我怎么才能得到已排序的列表,但是想像一下我现在已经有,两个已排序好序的列表了。

麻省理工公开课 - 计算机科学及编程导论课程节选