(~s)
An ~ of something such as gas or radiation is the release of it into the atmosphere. (FORMAL)
The ~ of gases such as carbon dioxide should be stabilised at their present level...
Sulfur ~s from steel mills become acid rain.
N-VAR
(~s)
An ~ of something such as gas or radiation is the release of it into the atmosphere. (FORMAL)
The ~ of gases such as carbon dioxide should be stabilised at their present level...
Sulfur ~s from steel mills become acid rain.
N-VAR
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012