They know they will probably never see bhutan again .

他们知道他们可能再也无法回到不丹。

The issue has been costly for bhutan .

这个问题让不丹付出了极大的代价。

Bhutan was unified in the 17th century by a tibetan lama .

不丹在17世纪的时候由一位西藏喇嘛统一起来。

Beyond africa , bhutan is particularly short of doctors .

而在非洲以外，不丹的医生资源比较短缺。

Until recently , bhutan 's rulers showed little such trust .

直到最近，不丹的统治者没有表现出这种信心。