yawn

n.呵欠 vi.打呵欠

yahoo, yak, Yale, yam, yammer, yang, Yank, Yankee, yap, yard, yard of ale, yard-arm, yardage, yardstick, yarmulka, yarn, yarrow, yashmak, yaw, yawl, yaws, yd, ye, yea, yeah, year, year after year, year in and year out, year in year out, year-book, year-long, yearbook, yearling, yearly, yearn, yearn for, yearning, yearningly, yeast, yeastiness,