We flew in the sky in a hot-air balloon.

The sphericity of this object is very high.

The bulbourethral gland plays an important role in the male reproductive system.

His batting eye is amazing.

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

He was diagnosed with agranulocytosis.

I need a heat-killing bee ball in my garden.

Pre-ejaculate is a fluid that is secreted from men during sexual arousal.

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.