I know this is sudden, but could you arrange a time for me to meet the president?

The expansion of this problem should be limited.

His voice change is a natural phenomenon that occurs as part of puberty.

In this classical literature, the technique of kakarimusubi is skillfully used.

She called out to a passerby.

He gave courage to the children through his voice.

His loud vocalization echoed throughout the room.

She likes collecting gemstones.

He is an expert in gemology, and he is good at evaluating the quality of diamonds.

He works as a pilot in the air force.