树干横剖面 · 图解英语单词 · 9 个单词

树干横剖面场景图解英语单词:9个高频词汇(annual ring, bark, cambium, heartwood, phloem, pith…)带图标签、真人发音、中英对照,附免费可打印 A4 PDF,点图即可学单词。

Tree trunk cross-section annotated picture vocabulary with labeled objects

本图点读词汇(9)

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