There are many introduced species of plants living in this park.

She went to the dermatologist to remove the milium.

This is my favorite hiryūshu.

Let's cherish every encounter with the spirit of 'once in a lifetime'.

Life is a series of ups and downs.

He does his work perfectly, dotting the i's and crossing the t's.

I conducted an interview in a question-and-answer format.

She was a secret kunoichi (female ninja).

He threw a handful of sand into the sea.

"Once in a lifetime" means to cherish the encounter that happens only once in one's lifetime.