Blog communities know no borders — they are not bound by certain provider, country borders, or age.

博客社区无边界，它不拘于特定的博客作者，作者的国籍或者其年龄。

youdao

But because all we know about t is that it's a subtype of its declared bound, we have no idea what constructors an instantiation of t will have. This problem could be handled in one of three ways.

但由于我们只知道T是其已声明界限的子类型，所以我们不知道T的某一实例化将有什么构造函数。

youdao

Having few friends is better than having a lot of fake friends because at least you know that no matter what, they would be there for you while fake friends are bound to leave you.

三两知己比拥有一大堆狐朋狗友要好，因为至少你知道，无论发生什么，真正的的朋友都会在你身边，而虚假的朋友则准备好了要离你而去。

youdao