名词
中文翻译：茎干坑
同义词：
['sapwood pit', 'stump pit', 'root pit']
例句：
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1.The tree was felled and the stump was left to rot in the pit.
这棵树被砍倒后，树桩留在坑里腐烂了。
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2. The workers were digging a stump pit for the new tree.
工人们正在挖一个为新树准备的根坑。
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3.The old house had a stump pit that held a few stones.
旧房子有一个根坑，里面有几个石头。