qto

abbr 缩写 = quarto.

pyramid, pyramid selling, pyramidal, pyre, Pyrex, pyrites, pyromania, pyromaniac, pyrotechnic, pyrotechnics, Pyrrhic victory, python, Q, Q, q, QB, QC, QE2, QED, qr, qt, qty, qua, quack, quack-quack, quackery, quad, quadr(i)-, Quadragesima, quadrangle, quadrangular, quadrant, quadraphonic (also quadrophonic), quadraphony (also quadrophony), quadratic equation, quadrennial, quadrilateral, quadrille, quadrillion, quadrophonic, quadrophony, quadruped,