rodent

n. 啮齿类动物（如鼠等）

rock'n'roll, rock-bottom, rock-cake, rock-climbing, rock-crystal, rock-garden, rock-plant, rock-salt, rock-steady, rocker, rockery, rocket, rocketry, rockiness, rocking-chair (also rocker), rocking-horse, rocky, rococo, rod, rode, rodeo, rodomontade, roe, roebuck, roentgen (also rontgen), Rogation Sunday, rogations, roger, rogue, roguery, rogues' gallery, roguish, roguishly, roguishness, roil, roister, roisterer, roistering, role, role (also role),