The x-axis of the graph represents time.

This graph represents time on the Y-axis.

The axon of a nerve cell is like a road for transmitting information.

The design of this wheel and axle is very unique.

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.