bulb

名词 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
   同义词：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)
   同义词：medulla oblongata, medulla
5. a rounded dilation or expansion in a canal or vessel or organ

1. The light bulb imploded.
   这灯泡是向内侧爆裂的。
2. This light bulb has gone.
   这灯泡不亮了。
3. Light glared from the unshaded bulb.
   无罩灯泡发出耀眼的光。
4. I can see clearly that the filament in the bulb is broken.
   我可以很清楚地看到灯泡里的细丝断了。
5. Do you know who is the creator of the electric bulb?
   你知道谁是电灯的发明者？
6. The light bulb in the kitchen burnt out.
   厨房里的电灯泡烧坏了。
7. We will have to change the bulb; it's gone.
   电灯泡爆了，我们需要换一个。
8. Onions and lilies grow from bulbs.
   洋葱和百合是从球茎中长出的。

bulb

n.（名词）
Botany
【植物学】
A short, modified, underground stem surrounded by usually fleshy modified leaves that contain stored food for the shoot within:
鳞茎，球根：一个短的，可修剪的，地下茎，常被肉层的可修剪的叶子包裹着，内部含有根部所需的养分：
例句：
an onion bulb; a tulip bulb.
洋葱球；郁金香球根

A similar underground stem or root, such as a corm, rhizome, or tuber.
球茎：一个类似的位于地下的茎或根，如球茎、块茎或球根
A plant that grows from a bulb.
块茎植物：由球根生长成的植物
A rounded projection or part:
球物：圆形的突出物或部分：
例句：
the bulb of a syringe.
注射器的圆形部分

An incandescent lamp or its glass housing.
灯泡：白炽灯或其玻璃外罩
Anatomy A rounded dilation or expansion of a canal, vessel, or organ.
【解剖学】 肿块：管、血管或器官的圆形扩张或膨胀

来源：
Latin bulbus
拉丁语 bulbus
from Greek bolbos [bulbous plant]
源自 希腊语 bolbos [由球茎长成的植物]