Word · CEFR A2 · Frequency #5690
bulb
鳞茎
核心释义
The rounded underground part of a plant such as a tulip, consisting of a short stem and fleshy scale leaves, from which the plant can regrow.
- 1.
The bulb-shaped underground portion of a plant such as a tulip, consisting of a shortened stem and many fleshy scale leaves, from which the rest of the plant may be regrown.
- 2.
Any solid object rounded at one end and tapering on the other, possibly attached to a larger object at the tapered end.
- 3.
A bulbous protuberance at the forefoot of certain vessels to reduce turbulence.
球状物；圆头物；球鼻艏；球茎；电灯泡；[医] 球
用法In use
I need to replace the bulb in the kitchen ceiling light.
用法提示：名词，指电灯泡。
The bulb flickered for a moment before it went out completely.
用法提示：名词，指电灯泡。
Please turn off the lamp once the bulb has cooled down.
用法提示：名词，指电灯泡。
light bulb
light bulb是固定搭配，指电灯泡。
He replaced the broken light bulb in the kitchen.
他更换了厨房里坏掉的电灯泡。
bulb of [sth]
表示某物的球状或膨大部分。
The bulb of the thermometer contains mercury.
相关词与表达Connections
搭配Collocations
- light bulb
- 灯泡
- The light bulb needs to be replaced.这个灯泡需要更换。
- tulip bulb
- 郁金香球茎
- She planted tulip bulbs in the garden.她在花园里种了郁金香球茎。
- bulb socket
- 灯泡插座
- The bulb socket is broken.灯泡插座坏了。
- incandescent bulb
- 白炽灯泡
- Incandescent bulbs are less efficient than LEDs.白炽灯泡比LED灯泡效率低。
- replacement bulb
- 替换灯泡
学习提示Learner notes
记忆技巧Memory Tip
想象灯泡（bulb）像一颗圆鼓鼓的球茎。
语境与语域Context & Register
register: neutral; contexts: 家居照明, 商业照明, 工业照明; note_zh: 通常指电灯泡，是非常常见的日常用品，也可用于专业场合。
语法说明Grammar Note
是可数名词，有复数形式 bulbs。
发音与拼写Pronunciation & Spelling
没有完全押韵的词。注意'bull'的元音/ʊ/不同于/bʌlb/中的/ʌ/；'bulk'和'bulge'的结尾分别是/k/和/dʒ/，不同于/b/。
用法优先级Usage priority
Collins 词频等级为 2，建议结合例句记忆，而不是只背中文释义。
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Dictionary facts from ECDICT, WIKTIONARY.