Definition

Examples

• 他用针在纸上扎了一个针孔。
  Tā yòng zhēn zài zhǐ shàng zhā le yí gè zhēn kǒng.
  He pricked a pinhole in the paper with a needle.
• 这个针孔太小了，光线几乎透不过去。
  Zhège zhēn kǒng tài xiǎo le, guāngxiàn jīhū tòu bú guò qù.
  This pinhole is too small; light can barely pass through.
• 相机利用针孔成像的原理。
  Xiàngjī lìyòng zhēn kǒng chéngxiàng de yuánlǐ.
  Cameras use the principle of pinhole imaging.