What does the tilde in this sentence mean?

Mr. Yabuue is my best friend.

Please refer to the previous example.

I would like to visit Xanadu once.

A small star is shining in the top right corner.

He is deeply studying about the classification of superphylum in his biological research.

This rock contains jokokuite.

When choosing a dress, she prefers one that moderately shows the upper part of her breast.

He took that risk deliberately.

I have been to Shangrao city.