But demanding too much of air travelers or providing too little security in return undermines public support for the process.

可是，如果对飞机乘客的要求过于苛刻，或者相应的安全保障太少，反过来就不利于民众对安检的支持。

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Food was provided for penniless but hungry travelers at the two or three daily feed-ins.

每天举行两三次施舍，为身无分文的饥饿行人供应食物。

《新英汉大辞典》

But for now, travelers are finding that procrastination can save money.

但迄今为止，旅行者仍然发现推迟预订可以省钱。

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The world may have gotten a lot smaller in that time, thanks to advances in electronic communication, but for travelers, it's also gotten a lot bigger.

FORBES: New Horizons

It's sporadic and random, but promising for travelers if more people post information.

WSJ: Summer Air-Travel Survival Guide

But domestically, for travelers who need to get from one major city to another, flying is often the only practical choice.

FORBES: Don't Fly - Why Trains Are the Best Way to Travel Overseas