His Japanese ability is improving gradually.

This mutetrahedron plays a very important role in the world of mathematics.

In arid regions, there is little rain, making it difficult for plants to grow.

His movement was very fast.

He exhausted his strength to finish the work.

The committee approved the new project.

Sentarou fell asleep while watching TV.

He rubbed his hands together to get warm.

He has a strong sense of self-affirmation and always maintains a positive attitude.

Tou's character is transparent like his name, hiding nothing.