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.

Political correctness is an important theme in modern society.

He ordered a vesper at the bar.

I am growing parsnips in my garden.

Happy birthday, Mr. Tanaka! I hope you have a wonderful year.

The crossfade of this song is very smooth, it's pleasant to listen to.

The DJ crossfaded two songs to create a smooth transition.

The problem of the lost generation should be solved by the whole society.