Salmon return to their spawning grounds by going upstream.

Salmons make a great effort to go upstream the river.

He wrote a sentence using superscript numbers.

This design is top aligned.

He is good at keeping balance on a horse's saddle.

In geomorphology, an antidune is a special type of sand dune that forms on the downstream side of a water flow.

In linear algebra, the upper triangular matrix plays a very important role.

The grammar of 'Jou-nidan' is an important part in learning Japanese.

My room is on the upper level.

This handover is our new project.