He fell asleep immediately after taking the sleeping pill.

He is involved in drug discovery research.

This fertilizer helps plant growth.

I opened the medicine packet and took the medicine inside.

I scooped and drank the soup with a spoon.

I scooped and drank the soup with a spoon.

In this experiment, we will use an indicator to observe the reaction between acids and bases.

He is a person of strong vanity who reads self-improvement books.

Everyone, please have a good new year.

The concept of chemical equivalent is essential for understanding chemical reactions.