second chamber
noun /ˌsekənd ˈtʃeɪmbə(r)/
/ˌsekənd ˈtʃeɪmbər/
(especially British English) (also upper chamber, upper house ())
[singular]- one of the parts of a parliament in countries that have a parliament that is divided into two parts. In the UK it is the House of Lords and in the US it is the Senate.
第二议院：在议会中被分为两部分的国家中，议会的一部分。在英国是上议院，在美国是参议院。