名词
中文翻译：不连续的生长环
同义词：
['non-continuous growth ring', 'discontinuous ring']
例句：
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1. The tree's growth rings are a record of its age.
这棵树的生长环记录了它的年龄。
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2.The growth rings in the fossilized wood show that it was once alive.
化石木中的年轮显示它曾经是活的。
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3.The growth rings on the tree trunk indicate the tree's growth rate.
树树干上的年轮表明了树木的生长速度。