But when all we know about our superclass is that it's some instantiation of a type parameter, we have no idea what constructors will be available for a given instantiation.

但是在我们对超类所知的一切只限于它是类型参数的实例化时，对于什么样的构造函数可用于给定的实例化，我们没有任何概念。

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

He brings it up as if we know that this is what he's been talking about all the time.

他提出这个好像我们知道一样,这是他一直在说的东西。

耶鲁公开课 - 现代诗歌课程节选

If that happens again it will be nice but past records will count for nothing and we know it's all about what happens on 24 March.

BBC: Russel Arnold's column

They think it's all about the money but, you know what, we've been working since we were 16 years old and we came from Venezuela to represent.

NPR: Americans Try To Reach WBC Title Game At Last

We still continue to believe that Mitt Romney's experience and time at Bain, the deals he was or wasn't involved in depending on how long he was there, his investments, the short span of which we know about, are important because it offers a prism for the American people into what he's all about and what kind of a President he will be.

WHITEHOUSE: The White House