I'm convinced that man's exploration of the unknown is worthwhile and it will pay in the long run.

我相信人类对未知的探险是值得的，长时间的努力是有回报的。

youdao

Dan Petrovic, General Director of Dejan SEO: "Mars One is not just a daring project, but the core of what drives human spirit towards exploration of the unknown."

丹·佩特罗维奇，德扬seo总经理：“火星壹不只是一个大胆的项目，而且核心是驱动人类对探索未知的精神。”

youdao

A lack of exploration means the country's oil and gas potential remains largely unknown.

因勘探不足，该国的潜在石油和天然气储量在很大程度上仍是个未知数。

youdao

It's a far cry from the golden age of exploration, when daring men set sail into the unknown, fearful they might suddenly drop off the edge of the world.

CNN: Quest for exploration