ol bold 大膽的 [Card #20; 字卡第20張: 第5個單字, 字母組合發音 ol]

Some more examples（更多例字）：old, gold, mold, sold, cold, scold, told, retold, untold, fold, unfold, billfold, blindfold, hold, behold, withhold, stronghold, foothold, household, threshold, colt, bolt, jolt, volt, voltage, revolt, yolk, folk, poll, toll, roll, scroll, stroll, patrol, control, bolster, holster, molten, protocol