Number + 个 + 灯泡
灯泡 (dēngpào) is a noun meaning "light bulb." It refers to the glass bulb that produces light and is a common household item. For example, 一个灯泡亮着 means "a light bulb is on."
厨房的灯泡坏了,需要换一个。
Chúfáng de dēngpào huài le, xūyào huàn yī gè.
The light bulb in the kitchen is broken and needs to be replaced.
他踩着椅子拧上了新灯泡。
Tā cǎi zhe yǐzi nǐng shàng le xīn dēngpào.
He stood on a chair and screwed in the new light bulb.
那个灯泡一闪一闪的,快要烧了。
Nàge dēngpào yī shǎn yī shǎn de, kuàiyào shāo le.
That light bulb is flickering; it's about to burn out.