tree ring
noun [ C ] uk/ˈtriː ˌrɪŋ/ us/ˈtriː ˌrɪŋ/
（树木的）年轮
one of the rings that you can see in a tree trunk (= centre part) if you cut through it. Each tree ring shows one year's growth.
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。