I am a member of that research association.

The Paleogene period was a very important time in the history of the Earth.

I am planning to go to Inner Mongolia, an autonomous region of China, next week.

I have been to Outer Mongolia.

I have been to Chicago.

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

He is spending a lot of time on experimental research.

We should always remember the power of Kannon in difficult times.

The National Research and Development Agency plays a crucial role in advancing science and technology.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.