名词
中文翻译：未过期的保险费
同义词：
['unexpired insurance']
例句：
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1.The company offers unexpired premium plans for its customers.
该公司为顾客提供未过期的保险计划。
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2. The policyholder must pay the unexpired premium before the policy expires.
保单持有人必须在保单到期前支付未过期的保险费。
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3.The unexpired premium will be refunded to the customer if the policy is cancelled early.
如果提前取消保单，未过期的保险费将退还给客户。