He is an expert in aerobiology, engaged in the study of microorganisms in the atmosphere.

The Cyrillic script is used in many Slavic languages, such as Russian and Ukrainian.

This email contains ghost characters.

I can't read this email because the characters are corrupted.

Please write this word in lowercase.

She uses a lot of emoticons in her messages.

The Latin alphabet is the most widely used alphabet in the world.

In ancient Egyptian civilization, hieroglyphs were commonly used.

He wrote a message using ideograms.

Arabic is often written in abjad.