气门 (qì mén) — tire valve (on a car, bicycle, etc.); spiracle or stigma (breathing pore in insects, fish, or plants)

Definition

Examples

• 自行车的气门坏了，需要换一个新的。
  Zì xíng chē de qì mén huài le, xū yào huàn yí gè xīn de.
  The bicycle's tire valve is broken and needs to be replaced with a new one.
• 昆虫通过身体两侧的气门呼吸。
  Kūn chóng tōng guò shēn tǐ liǎng cè de qì mén hū xī.
  Insects breathe through the spiracles on the sides of their bodies.
• 这种植物的叶子上有明显的气门结构。
  Zhè zhǒng zhí wù de yè zi shàng yǒu míng xiǎn de qì mén jié gòu.
  This plant has obvious stigma structures on its leaves.