Kangaroos are viviparous animals.

His success is due to his tenacity.

He suffered from a transient disease, but recovered quickly.

He is an expert in biochemistry.

I am interested in the work of book binding.

He bound his thesis into a book.

As an astronomer, he is dedicated to the study of binary stars.

Protecting the biosphere is important for the future of the Earth.

This road is covered with new asphalt.

His son has cerebral palsy.