In physics, the charm quark is one of the six quarks.

His behavior was so cruel that I was at a loss for words.

I gave a farewell gift to my friend who is going to study abroad from tomorrow.

Yu helped me with my homework.

It seems that this river is flowing backwards.

We are planning to set off early tomorrow morning.

Mr. Inami is my best friend.

He is good at distinguishing music genres.

縱 is a kanji that is not often seen in names.

In this graph, the vertical axis represents time.