growth ring
noun/ˈɡrəʊθ rɪŋ/
/ˈɡrəʊθ rɪŋ/
- a layer of wood, shell or bone developed in one year, or in another regular period of growth, that an expert can look at to find out how old something is
（树木、壳或骨等的）生长轮，年轮
| 单词 | growth-ring |
| 释义 | growth ringnoun/ˈɡrəʊθ rɪŋ/ /ˈɡrəʊθ rɪŋ/
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