She gave me a handmade gift.

Using punctuation marks correctly is important for understanding sentences.

What is this solid made of?

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

Alkynes play a very important role in organic chemistry.

Alkynes play an important role in organic chemistry.

I go to the mountains on weekends to enjoy forest bathing.

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

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

My company specializes in the manufacture of fine chemicals.