There is no doubt that spaceflight entails risks, and to pioneer a new mode of travel is to face those risks, and to reduce them with the benefit of hard-won experience.

毫无疑问，太空飞行是有风险的，而开创一种新的旅行方式就是要面对这些风险，并利用来之不易的经验来减少这些风险。

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This gave our ancestors the freedom to store food for hard times, travel long distances and live in harsh climates.

这让我们的祖先在困难时期、长途旅行或恶劣气候条件下可以自由保存食品。

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The severity of theblow was felt on the stock market on Monday, where shares in the travel andleisure sector were hard hit.

星期一，动乱对股票市场的打击开始显现，旅游和休閒类股票遭到重创。

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The Asia-Pacific travel industry is on the rise after two years of hard times caused by soaring fuel prices and the global economic slump.

VOA: standard.2010.02.04

So how hard could travel be?

FORBES: Big Data Meets Online Travel - 20 Billion Offers, One-Second Response Time

Both villages had received some help from local charities and the army, but villagers were worried about the hundreds of young children, as well as the widows and others who found it hard to travel to relief-distribution points lower down the valley.

ECONOMIST: Many survivors of October's earthquake are still at risk

One consequence of what happened is that Israeli leaders need to think hard before they travel abroad.

BBC: Gaza still on a knife-edge, one year on from the war