Gallium arsenide is a type of semiconductor, widely used in high-frequency electronic devices.

The use of this machine is simple.

This is a kind of flower.

Semiconductor technology forms the basis of modern electronic devices.

Setting up a new device is difficult.

This water is dangerous to drink because it contains arsenic.

Gallium is one of the elements on the periodic table.

This computer can be used by anyone.

An electron is a part of an atom.

Looking at this vast sea, I feel free.