I heard a roar from far away.

This mineral is as rare as todorokite.

There is a large French window in my room.

He opened the window to let fresh air into the room.

The view from the airplane window is very beautiful.

She put a vase on the windowsill.

We looked at the sea from the window in the small boat with a thatch roof.

From the mugwort window of my room, a landscape of fresh green mugwort spreads out.

There are two windows in this room.

Mercury(II) fulminate is a very sensitive explosive and needs to be handled properly.