年轮 (nián lún) — annual ring; growth ring

Définition

Exemples

• 科学家通过观察年轮来了解树木的年龄。
  Kē xué jiā tōng guò guān chá nián lún lái liǎo jiě shù mù de nián líng.
  Scientists learn the age of trees by observing their growth rings.
• 年轮的宽度可以反映当年的降雨量。
  nián lún De kuān dù kě yǐ fǎn yìng dāng nián de jiàng yǔ liàng.
  The width of the growth rings can reflect the rainfall of that year.
• 这块木头的年轮非常明显。
  Zhè kuài mù tou de nián lún fēi cháng míng xiǎn.
  The growth rings on this piece of wood are very distinct.