Categorisation of online travel sites used to be easy. Either a site was transactional or non-transactional.

对在线旅游网站的分类一度是很简单的，只有交易性网站和非交易性网站两种。

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Think of how easy it would be to pick up and travel, or move, or change jobs, or do something with a friend in the middle of a work day.

试想一下随心地旅行、搬家、换工作、在工作日的某个时候和朋友做某件事。

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It can be easy to overdo it on the road, which combined with the regular rigors of travel can really wipe you out.

在旅行中很容易太卖力，再加上严格执行旅行计划，可能你就累垮了。

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"I wanted to go to North Korea and because it was not yet mapped I decided to start mapping so I could at least see how easy it would be to travel within the country, " Sebastiaan van Oyen, who works as a risk manager for a financial trading firm in Sydney, told the BBC.

BBC: Google expands North Korea map coverage

It would be easy enough to capture my travel preferences and provide me with a level of service tuned to my needs.

FORBES: Let's Go Alienate Some Customers Today

Cisco's unified communications systems and TelePresence hardware, for instance, which are designed to facilitate easy remote conferencing, may be seen as a cost-cutting measure to replace expensive travel as fuel prices rise.

FORBES: Cisco Sets The Bar Low