"No-brainer" Natural Recordings by Native Speakers
"a no-brainer" is an idiomatic expression that means something that is easy to decide or do, requiring no thought or effort. It is often used to describe a situation where the answer is obvious, and it's a clear choice to make.
NKVD stands for Narodnyy Komissariat Vnutrennikh Del, which is Russian for People's Commissariat for Internal Affairs. It was the primary security agency of the Soviet Union from 1934 to 1946, responsible for law enforcement, intelligence gathering, and repression. The NKVD was often associated with Joseph Stalin's purges and mass repressions, and its notorious reputation is still remembered today.
I apologize, but "nmole" is not a commonly used word in English language. However, "nmole" is an abbreviation for "nanomole", which is a unit of measurement in chemistry. One nanomole is equal to one billionth of a mole. A mole is a unit of amount of substance, and it's equivalent to the number of particles (atoms, molecules, etc.) that contain as many particles as the number of atoms in 0.012 kilogram of carbon-12.
NOAA stands for National Oceanic and Atmospheric Administration, which is a United States government agency responsible for the conservation and management of marine and coastal resources, as well as the prediction and research of weather and climate-related phenomena.