You can also use import to introduce other non-constant members as well. For example, consider a math utility library (of questionable value perhaps, but still...) in Listing 6.
也可以使用import来引入其他非常量的成员。
The value of non-utility also divides into exist, heritage and choice.
非利用价值又分为存在价值、遗产价值和选择价值。
应用推荐