When the primary earthquake occurred, we were frozen in fear.

The mechanical pencil lead has run out, so I have to go buy a new one.

After reading his personal writing, I understood his feelings well.

He personally wrote a letter by his own hand.

The trees standing close together are swaying in the wind.

We started our journey to the divine nation.

We need to synchronize this video and audio.

We danced by synchronizing the music.

We performed data synchronization.

We need to synchronize our watches.