sixteen-year-olds可以直接使用,sixteen-year-old不可以直接使用后面要加boy?
问题描述:
sixteen-year-olds可以直接使用,sixteen-year-old不可以直接使用后面要加boy?
答
sixteen—year—olds=sixteen—year—old persons
sixteen-year-olds可以直接使用,sixteen-year-old不可以直接使用后面要加boy?
sixteen—year—olds=sixteen—year—old persons