lower chamber
noun /ˌləʊə ˈtʃeɪmbə(r)/
/ˌləʊər ˈtʃeɪmbər/
(also lower house)
[singular]- the larger group of people who make laws in a country, usually consisting of elected representatives, such as the House of Commons in Britain or the House of Representatives in the US
compare upper chamber(英国)下议院,平民院;(美国)众议院