名词
中文翻译：土坑
同义词：
['dugout', 'pit', 'hole']
例句：
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1.They dug a big pit to dig up the roots of the tree.
他们挖了一个大坑来挖树根。
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2.The old man dug a pit in the ground and buried his treasure there.
那个老人在地上挖了一个坑，把宝藏埋在那里。
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3.The children were digging a hole in the sandbox for their sandcastles.
孩子们在沙箱里挖了一个洞，准备建他们的沙堡。