He practices vocalization every day.

He practices every day to pronounce accurately.

This gem luminesces under special conditions.

The gem emits light in the darkness.

The sale of the new product will start from next week.

The joy of drawing a green dragon in mahjong is exceptional.

The hyena is a nocturnal animal, mainly carnivorous.

My Akita dog is very smart.

My Akita dog is very smart.

At the airport, drug dogs are sniffing passengers' luggage.