名词
中文翻译：Unknown
同义词：
['worm droppings', 'fecal matter']
例句：
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1.The worm casts were found in the riverbed.
在河床上发现了蠕虫粪便。
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2.The farmer was worried about the worm casts in his fields.
农民担心他的田地里有蠕虫粪便。
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3. The worm casts are a sign of poor sanitation.
蠕虫粪便是卫生状况不佳的标志。