crown of a tree
The tops of the trees rippled in the breeze.
树冠在微风中婆娑摇曳。
—— 柯林斯例句He was up a ladder sawing off the tops of his apple trees.
他正站在梯子顶上锯他那颗苹果树的树冠。
—— 柯林斯例句The trees formed such a dense canopy that all beneath was a deep carpet of pine-needles.
树冠浓密,覆盖着厚厚一层松针。
—— 柯林斯例句Pruning , by removing part of the top , alters this ratio.
修剪通过剪除部分树冠而改变根冠比。
—— 辞典例句Reproduce naturally in the open rather than under an overstory.
宁在空旷地而不是树冠下自然繁殖。
—— 辞典例句