A caucus is a meeting of members of a political group or party, usually to select candidates or discuss policy. Its meaning is straightforward, but the history of this word remains a mystery. It seems certain that it is an Americanism, and some have suggested a Native American origin or that it comes from “caulker’s meetings” among shipbuilders, but no definitive proof has been found.
primary比较简单，就是大家熟知的匿名投票
quadrennial
any of many types of desert plant, usually with sharp spines and thick stems for storing water:
The only thing that grows here is an occasional sage bush or cactus.
221822
