They are always being affectionate.

They are always lovey-dovey, and I'm very envious.

This rock contains stibnite.

The ejecta from volcanoes help to elucidate the geological history of the Earth.

He is doing special exercises to strengthen his dorsal interosseus muscle.

Please attach this file to the email.

This plant is strongly affected by auxin.

The pool water is disinfected with chlorine.

Koiso-san is my best friend.

We need oxygen to live.