他对现代艺术抱有一种封闭的态度。

He has a ___closed mind when it comes to modern art.

带着封闭的思想去旅行会阻碍我们真正欣赏其他文化。

Traveling with a ___closed mind prevents us from truly appreciating other cultures.

他们对创新的封闭态度正在阻碍进步。

Their ___closed attitude towards innovation is hindering progress.