My grandmother moves around the room using a walking frame.

This museum has a wonderful collection of reliefs.

The result shows a significant difference.

The result is statistically significant.

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

At what point in Earth's history does the Triassic period fall?

What was the motive behind his actions?

The development of this essay is written very skillfully.

The primitive salamander is a species unique to Japan and is a very rare creature.

The salamander is a unique creature that inhabits fresh water in Japan.