bulb

a rounded part of a cylindrical instrument (usually at one end)

圆柱形仪器的圆形部分（通常在一端）

the bulb of a syringe

注射器的球

electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity

电灯，由一个透明或半透明的玻璃外壳组成，外壳上有一根电线丝（通常是钨丝），当被电加热时发出光

light bulb

lightbulb

incandescent lamp

electric light

electric-light bulb

a rounded dilation or expansion in a c or vessel or organ

管道、血管或器官的圆形扩张

lower or hindmost part of the brain

大脑的下部或后部

continuous with spinal cord

连续性脊髓损伤

(`bulb’ is an old term for medulla oblongata)

（‘bulb’是延髓的旧名词）

the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning

延髓是大脑较重要的部分，因为它包含控制呼吸和心脏功能的中心

medulla oblongata

medulla

a modified bud consisting of a thickened globular underground stem serving as a reproductive structure

由加厚的球形地下茎组成的改良芽，用作生殖结构

anything with a round shape resembling a teardrop

任何形状像泪滴的圆形物体