We used pH indicators to determine whether the soil sample was acidic or alkaline.

In our Latin class, the teacher explained how to form the imperfect indicative.

In Spanish, the present indicative is used to describe habitual actions and general truths.

All vessels are required to carry emergency position indicating radio beacons to ensure rescue teams can locate them quickly.

During the storm, the captain ordered the activation of the emergency position indicating radio beacon to alert nearby vessels.

The management team selected customer satisfaction score as the key performance indicator to measure our progress toward service excellence.

Researchers compared the body mass indices of participants across different age groups to study metabolic risk.

Analysts compared several stock market indices to assess global economic trends.

In the lab, acid-base indicators were used to determine the endpoint of the titration.

Researchers compared temperature-humidity indices across multiple cities to evaluate heat stress patterns.