但是科学家发现这些新病毒是不稳定的。

But the scientists found that the new virus was somewhat unstable.

youdao

往往首先注册一个病毒感染是不稳定。

Often the first sign of a virus infection is instability.

youdao

往往首先注册一个病毒感染是不稳定。

Often the first sign of a virus infection is instability.

youdao