We need to minimize the system's downtime.

His meaningful gaze made me uneasy.

The color of her dress was indigo.

In Japan, 4 and 9 are considered unlucky numbers.

The chime rang, and the class began.

He wrote a message using mirror writing.

This boundless universe is beyond our imagination.

My friend came from Indonesia.

From his explanation, I was able to have an image of a beautiful landscape.

He is imagining a new project.