My body has started to produce antibodies against the new coronavirus.

This antibody strengthens the defense against the virus.

I meet my friends at the school gate every day.

The weather today is very hot.

I have been to Heilongjiang Province.

Since it's spring, it's time for changing of clothes.

The distance to this star is 3 light years.

He, who was born in the year of the Wood Rat, is a very diligent and knowledgeable person.

He was studying ancient documents and found the character '黃門'.

They have been at war for a long time.