词源字典

*upo

*uper

*trep-

*tolkw-

*tkei-

*teuta-

*teue-

*ters-

*terkw-

*tere- (1)

*ten-

*tem-

*teks-

*tag-

*sē-

*syu-

*swep-

*swen-

*streb(h)-

*stere-