a discovery that changes understanding in a field
открытие, которое изменяет понимание в какой-либо области (otkrytie, kotoroe izmenyaet ponimanie v kakoy-libo oblasti)
"The new vaccine was a groundbreaking discovery in medicine."
"Новая вакцина стала революционным открытием в медицине." (Novaya vaktsina byla **groundbreaking discovery** v meditsine.)
to be at the forefront of an action or movement
to be physically fit and healthy
To feel that one has done the right thing.
a point where a decision must be made; a choice between two...
to establish high standards or expectations
feeling slightly unwell or upset
