He wants to improve his sailing skills.

We are planning to sail during the summer vacation.

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.