My boyfriend gave me a gift.

Everyone was surprised by the news.

He is an expert in ethology, and his research is highly regarded worldwide.

Natural language understanding is an important field of artificial intelligence.

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

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

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.