And, since they were created underground and not from flowing surface water, not all these passageways have an opening to the outside world.

并且，由于它们是在地下形成的，而不是由地表水流形成，所以并不是所有的通道都有通向外部世界的开口。

youdao

Our entire policy of opening to the outside is an experiment too, and a big one from the world point of view.

我们的整个开放政策也是一个试验，从世界的角度来讲，也是一个大试验。

youdao

Yichang is becoming more and more widely known for the huge Three Gorges Project and the policy of opening to the outside world.

随着三峡工程动工兴建，宜昌在国内外声誉日益提高。

youdao

But China will continue trying to prod the North Koreans into reforming the economy and opening the country more to the outside world.

ECONOMIST: North Korea's succession

This may eventually lead to a merger of Ifil with Fiat, opening the door to an outside investor being brought in to rescue the Fiat Auto division, which is labouring under a heavy dependence on the Italian market, a lack of scale and earlier diversification into difficult emerging markets such as Brazil.

ECONOMIST: Cars

Opening the service up to regions outside the United States is another long-term goal, the company said.

CNN: Pandora eyes global market, talk radio