We will never allow foreign nations to invade our national boundaries.
我们绝不允许外邦入侵国界。
It's hard to break cognitive boundaries.
打破认知界限是很难的。
We will never allow foreign nations to invade our national boundaries.
我们绝不允许外邦入侵国界。
It's hard to break cognitive boundaries.
打破认知界限是很难的。