I often go to the sea on weekends.

Umi is my best friend.

Pus came out of his wound.

Pus came out of his wound.

I always relax at the seashore on weekends.

Ruthenium is part of the platinum group and is a hard, white metal.

We will use cesium in this chemical experiment.

Rhenium is a rare metal with stable characteristics at high temperatures.

Thallium is one of the chemical elements, and its symbol is Tl.

Iridium is a metal that is very rare in the Earth's crust.