The picture should work on a light blue backgroundThe picture should work on a light blue background
Interesting inscription with letters inside on a black backgroundInteresting inscription with letters inside on a black background
A famous scientist at the blackboard with formulasA famous scientist at the blackboard with formulas
A scientist on the background of a blackboard with formulasA scientist on the background of a blackboard with formulas
Мягкий белый известняк, употр. для окраски, писания и т. п.. Неглубокое место в реке, озере, море.