We need to minimize the system's downtime.

Her contours were beautiful, capturing the heart of the artist.

In this chemical reaction, ammonium is produced.

He was imprisoned as a political offender.

This plant has withered due to lack of water.

With old age, his eyesight gradually deteriorated.

Because he has immunodeficiency, he always pays attention to his health management.

I saw various kinds of birds in the park.

He is saving his monthly earnings.

He believes it's important to uphold his own rule.