Alkenes play an important role in organic chemistry.

Alkenes play a very important role in organic chemistry.

Alkanes are basic components of organic chemistry.

There is a speed bump on this road, so please be careful when driving.

My friend lives in New Hampshire.

According to the recipe, you need to add two tablespoons of sugar.

He is a superstar in the music industry.

Toyota Motor Corporation is one of the world's largest automobile manufacturers.

His speedy actions helped to finish the project within the deadline.

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