明白他的需要和这种需要的代价。
“那些最经常出游的人对旅游过程的低效率最不满意”，他说，作为一个社会，我们需要思考当有人说出门旅游是不值得的，我们的代价会是什么？
“As a society, we need to be thinking, what is the cost when someone says it’s not worth it to travel?”
他试图以自己的生命为代价来救别人的精神将永远激励我们帮助需要帮助的人。
His spirit of trying to save others at the cost of his own life will always push us to offer our hands to those in trouble.
他表示，这两种行为造成的后果是，穷人用水需要付出更高代价。
The result of both was that it cost poor people more to get access to water, he said.
他说，为风车所需要的东西一定要不惜一切代价。
The needs of the windmill must override everything else, he said.
他赢得的那五千美金根本抵不了他为此付出的代价——尽管在本月一号之前他的活期账户上确实需要这些钱。
The five thousand dollars he'd won simply wasn't worth the price though he did need that money in his checking account before the first of the month.
免撤销公钥框架作为一种新的PKI使得终端用户可以控制他自己的公钥证书的有效性，使验证证书不需要折回到CA去获取证书撤销信息，从而降低其使用代价。
As a new type of PKI, non-repudiation PKI make makes the terminal users able to control the validation of his CA, which will reduce the expense.
他承认豪华车开起来代价不菲，比如，需要两天就洗一次车，此外，每两天在排量六升的十二缸引擎需要花费一百二十块油钱。
He admits using a luxury car isn't all plain sailing- he has to clean it twice a day and the12 cylinder, six-litre engine guzzles an average of$120 worth of fuel every two days.
他承认豪华车开起来代价不菲，比如，需要两天就洗一次车，此外，每两天在排量六升的十二缸引擎需要花费一百二十块油钱。
He admits using a luxury car isn't all plain sailing- he has to clean it twice a day and the12 cylinder, six-litre engine guzzles an average of$120 worth of fuel every two days.
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