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several后跟可数还是不可数?

题目详情
several后跟可数还是不可数?
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答案和解析
当然可数了,真是..给你举个例子:Children of all ages should be outdoors several hours a day.各个年龄段的孩子每天都应户外活动几个小时.It is unique in several ways.它在好几方面是独特的.She had had severa...