He came down the stairs.

I love roller coasters.

I saw a swallow flying in the sky.

Mausoleum visited the mausoleum where the ancient imperial family sleeps.

Nae is the oldest shrine in this region.

He is majoring in philosophy at university, but he is a typical example of a 'learned fool'.

He bought six apples.

This is a 六角四片四角孔ねじれ正多面體, in other words, a muoctahedron.

This is a model of a muoctahedron.

Zero is used to represent absolute zero.