top-level domains顶级域;顶级域名
top-level talk最高级会谈
top-level class顶级类;顶层类
Top-level menu顶层菜单;顶级菜单
top-level Object顶级对象
top-level structure顶层结构
top-level schematic顶层原理图
top-level classes外部类
ADJ（形容词） A top-level discussion or activity is one that involves the people with the greatest amount of power and authority in an organization or country. 最高层的 [ADJ n]
...a top-level meeting of American generals at the Pentagon.
...一次在五角大楼举行的美国将领最高层会议。