He lost everything.

She is planning a date with her current boyfriend.

My boyfriend gave me a gift.

Everyone was surprised by the news.

He likes to take a walk in the park at dusk.

The exam ended and the results were good, so I thought 'all's well that ends well'.

When you read this original document, you can understand a completely different meaning from the translated version.

The source of this river is at the top of the mountain.

Pathogens can pose a significant threat to human health.

This pathogen is a new type of virus.