on a tree的用法和樣例：
例句
- He caught his foot on a tree root and stumbled.
他一隻腳被樹根絆住而跌倒了。 - The annular markings on a tree indicate its age.
樹的環形紋理顯示其年齡。 - He tripped on a tree root.
他被一株樹根絆倒了。 - Dead branches or wood on a tree.
枯枝，死木樹上的枯枝或死木
on a tree的相關資料：
臨近單詞
Ongan
on
on -line examination database system
On the Accelerated Depreciation Method
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On Researches into Russian Terminology
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on-line information retrieval system
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