题目内容
3. But sometimes,no rain falls for a long,long time. Then there is a dry period,or drought.( )
3. 干旱句意：但有时很久不下雨，于是就有一段干旱时期。drought意为"干旱"'
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3. But sometimes,no rain falls for a long,long time. Then there is a dry period,or drought.( )
3. 干旱句意：但有时很久不下雨，于是就有一段干旱时期。drought意为"干旱"'
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