There are sediments at the bottom of this lake that have accumulated over centuries.

His art style is unique, it's neither fish nor fowl.

By regularly checking the key performance indicators, you can understand the performance of the company and devise improvement measures.

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

My company specializes in the manufacture of fine chemicals.

Chemotransmitters play an important role in the transmission of information between nerve cells.

Stoichiometry is a method for calculating the amount of substances in a chemical reaction.

No chemical flavoring is used in this ramen at all.

The National Research and Development Agency plays a crucial role in advancing science and technology.

He always buys cheap things, so in the end, it becomes 'penny wise and pound foolish'.