多巴胺

Many; much; more; a lot of; too many; in excess; often; very; mostly; excessively; (bound form) multi-; poly-

To long for or wish for; to cling to or stick to; a state in ancient China; surname; unit of pressure (bar); informal abbreviation for bus.

A type of organic compound; specifically, a derivative of ammonia where one or more hydrogen atoms are replaced by hydrocarbon groups; used in chemistry.