This wall is completely solid, without any gaps.

What we should aim for is a society with zero COVID.

In the with-corona era, a new lifestyle is necessary.

He is using methods to avoid search engines so that his information does not get caught by them.

Hand washing and wearing masks are important for the prevention of severe acute respiratory syndrome.

He always seemed to be hiding something, always avoiding being seen.

He read the small print using a magnifying glass.

It is important to understand the importance of health.

The Ebola virus is a very infectious virus.

The poliovirus is a virus that primarily enters the body through the mouth and destroys the nervous system.