oi boil 沸騰, 煮沸 [Card #20; 字卡第20張: 第1個單字, 字母組合發音 oi]

Some more examples(更多例字):oil, soil, toil, foil, tinfoil, coil, recoil, broil, spoil, despoil, turmoil, turquoise, void, avoid, devoid, coin, loin, groin, rejoin, join, joint, point, appoint, disappoint, pinpoint, viewpoint, ballpoint, checkpoint, needlepoint, poison, poise, noise, noisy, doily, hoist, foist, moist, moisture, moisturize, voice, choice, rejoice, poignant, ointment, appointment, disappointment, paranoid, tabloid, steroid, asteroid, typhoid, toilet, boisterous, exploit, foible, loiter, embroider