bulbKK [bʌlb] /bʌlb/发音名词1灯泡The bulb in the hallway burned out again last night.走廊的灯泡昨晚又烧坏了。2球茎、鳞茎We plant tulip bulbs in the garden every autumn.我们每年秋天在花园里种下郁金香的球茎。3球状部、球形末端Hold the thermometer above the bulb to avoid warming it.拿温度计时要握在球状部上方,以免使它变热。用这个字练口说→