几个世纪以来，探险家们冒着生命危险探索未知的世界，其原因在不同程度上与经济和民族主义有关。
For centuries, explorers have risked their lives venturing into the unknown for reasons that were to varying degrees economic and nationalistic.
从某种程度上来说，我是一名蚂蚁生物学家，所以我开始思考我们对昆虫的生命有什么了解，并且我知道昆虫世界对于人类而言仍有许多未知的领域。
I am, in part, an ant biologist, so my thoughts turned to what we know about insect life and I knew that much in the world of insects remains unknown.
另一项重要的未知数，是全球化拆解的程度。
Another important unknown is the extent to which globalisation unravels.
应用推荐