Population decline is a serious problem.

Let's go out for tea with friends today.

The rich sauce of this pasta is delicious.

This dark purple dress is very elegant, isn't it?

This dark-colored dress is very elegant, isn't it?

This red is very deep, isn't it?

He understood the meaning of '討' (to chastise), and reflected on his actions.

This room is spacious and very comfortable.

The horse neighed.

He tempted her into committing a crime.