He likes to take a walk in the park at dusk.

Let's go to see a movie together.

I will turn twenty years old next year.

Our project is scheduled to be completed on the twentieth day of the month.

There is a two-story house.

What art thou doing?

Our project is scheduled to be completed on the twenty-second day of the month.

He repelled the enemy using the heavy rattan bow.

Haplology is a part of linguistics, referring to the phenomenon where a part is omitted when the same syllable repeats.

Tritium is one of the radioactive isotopes.