Traffic lights work all the time.

Source: Tatoeba

Contact the appropriate customer service helpline if the device does not operate properly.

Source: Tatoeba

It's working just fine.

Source: Tatoeba

How do TV remotes work?

How do the TV remote controls work?

Source: Tatoeba

Can you explain how this machine works?

Source: Tatoeba

These computers use batteries to operate.

Source: Tatoeba

This food contains all the minerals without which our bodies would not function.

Source: Tatoeba

The machine works all day.

Source: Tatoeba