Bookable associated or non- associated facility such as a commentary position, observer seat, camera position, etc.
But in a commentary, the Global Times hit out at "some foreignmedia" for interpreting the program as a breeding ground for a" hacker army ".
.. The breakup of the comet's nucleus releases the fresh material, which everybody in cometary science wants to study,"said Hermann Boehnhardt of the European Southern Observatory, who wrote a commentary accompanying the Science research.
If you study the Bible, you will find a commentary useful.