名詞 bulb:

1. a modified bud consisting of a thickened globular underground stem serving as a reproductive structure
2. electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity
   同義詞：light bulb, lightbulb, incandescent lamp, electric light, electric-light bulb
3. a rounded part of a cylindrical instrument (usually at one end)
4. lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata)
   同義詞：medulla oblongata, medulla
5. a rounded dilation or expansion in a canal or vessel or organ

1. The light bulb imploded.
   這燈泡是向內(nèi)側(cè)爆裂的。
2. This light bulb has gone.
   這燈泡不亮了。
3. Light glared from the unshaded bulb.
   無罩燈泡發(fā)出耀眼的光。
4. I can see clearly that the filament in the bulb is broken.
   我可以很清楚地看到燈泡里的細(xì)絲斷了。
5. Do you know who is the creator of the electric bulb?
   你知道誰是電燈的發(fā)明者？
6. The light bulb in the kitchen burnt out.
   廚房里的電燈泡燒壞了。
7. We will have to change the bulb; it's gone.
   電燈泡爆了，我們需要換一個(gè)。
8. Onions and lilies grow from bulbs.
   洋蔥和百合是從球莖中長出的。

bulb

n.（名詞）
Botany
【植物學(xué)】
A short, modified, underground stem surrounded by usually fleshy modified leaves that contain stored food for the shoot within:
鱗莖，球根：一個(gè)短的，可修剪的，地下莖，常被肉層的可修剪的葉子包裹著，內(nèi)部含有根部所需的養(yǎng)分：
例句：
an onion bulb; a tulip bulb.
洋蔥球；郁金香球根

A similar underground stem or root, such as a corm, rhizome, or tuber.
球莖：一個(gè)類似的位于地下的莖或根，如球莖、塊莖或球根
A plant that grows from a bulb.
塊莖植物：由球根生長成的植物
A rounded projection or part:
球物：圓形的突出物或部分：
例句：
the bulb of a syringe.
注射器的圓形部分

An incandescent lamp or its glass housing.
燈泡：白熾燈或其玻璃外罩
Anatomy A rounded dilation or expansion of a canal, vessel, or organ.
【解剖學(xué)】 腫塊：管、血管或器官的圓形擴(kuò)張或膨脹

來源：
Latin bulbus
拉丁語 bulbus
from Greek bolbos [bulbous plant]
源自 希臘語 bolbos [由球莖長成的植物]