名词短语
中文翻译：梯子
同义词：
['sluice', 'sieve', 'dredge例句：1. The ladder was too short to reach the top of the tree.（梯子太短，够不到树顶。）']
例句：
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1. The ladder was too short to reach the top of the tree.
梯子太短，够不到树顶。
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2.The bucket was filled with sand and water.
桶里装满了沙子和水。
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3.The dredger was used to remove the mud from the riverbed.
挖泥机被用来从河床上移除淤泥。