chamber/ˈtʃeɪmbə(r)/
n.1. 寝室2. 立法机关the Lower Chamber下议院
the Upper Chamber上议院
In Britain the upper chamber or parliament is the House of Lords, the lower the House of Commons.英国的上议院或国会是贵族议院，下议院是众议院。
3. （身体或器官内的）腔，室chamber of the heart心室
The heart has four chambers.心脏有两房两室。