resin duct的用法和樣例：
例句
- They are usually secreted by special cells into long resin ducts or canals.
樹脂通常隱藏在特定的細胞中，這些細胞形成長的樹脂道或樹脂管。 - Resin was synthesized by the active cells in the cambium zone including secondary xylem cells, cambium cells, secondary phloem cells and ray cells.
其形成的部位為當年的次生木質部，樹脂道是由最幼嫩的木質部部分細胞分化形成。
