hitherto unknown

In the era of Internet, people on the "Han Han phenomenon" the attention is hitherto unknown.

在互联网时代，人们对韩寒现象的关注也是前所未有的。

With modern economy uninterrupted growth, hotel, industry has also got hitherto unknown development.

随着现代经济的不断发展, 酒店行业也得到了前所未有的发展.

The United States sub-loan crisis for the fuse to the financial crisis, not only caused the whole world turmoil in the financial system, but also brings hitherto unknown challenges and crisis to the global enterprise.

以美国次贷危机为导火索的金融风暴，不仅造成全世界金融系统的动荡，同时给全球的企业带来了前所未有的危机与挑战。

Xinyang as an important support for the construction of the economic zone, the tourism industry is faced with hitherto unknown development opportunity, also facing the huge challenge.

信阳作为中原经济区建设的重要支撑点，旅游业面临着前所未有的发展机遇，同时也面临着巨大的挑战。

a hitherto unknown species of moth

迄今仍属未知种类的蛾