are是什么意思

We are still friends, though, which is good.

不过我们仍然是朋友，这令人感到欣慰。

There have been many changes in recent years.

近几年发生了许多变化。

There are still a few residual problems with the computer program.

电脑程序还有一些残留问题。

No new SARS cases have been reported in the region.

该区没有新增非典型肺炎病例。

A number of measures were taken to alleviate the problem.

采取了一系列措施缓解这个问题。

The two leaders are battling for control of the government.

两位领导人正在争夺政府控制权。

There are qualitative differences between the two products.

这两种产品存在着质的差别。