The Sejm, until 1573 summoned by the king at his discretion (for example when he needed funds to wage a war), composed of the two chambers presided over by the monarch, became in the course of the 16th century the main organ of the state power.
“瑟姆”在1573年之前由国王自行召集（比如在当他需要资金发动战争时召集），由两个议院组成，由国王主持，在16世纪逐渐演变为国家的主要权力机关。