E103-一定要时刻保持自信，它不花你一毛钱但可以带你至很棒的境界。

一定要时刻保持自信，它不花你一毛钱但可以带你至很棒的境界。Confidence, never deny yourself of it, for it costs you nothing and leads to great things.cost [kɔst]1. n. 价钱，花费，成本，代价，损失现在面包的价格已经增长了4倍。The cost of bread has increased five-fold.那种啤酒有得卖，10元一瓶。That kind of beer is available at a cost of ￥10.公司承认他的成本还是太高了。The company admits its costs are still too high.如果我们还想继续的话，成本必须削减30%Costs must be cut by 30% if we want to go on.为了能够跟她离婚，他付出了500万的代价。He finally got divorce with her at a cost of 5 million yuan.2. v. 花费，消耗，造成损失如果租儿童座椅的话，每周只要10美元。Child car seats only cost 10 dollars a week to hire.那台手术救了那个小孩儿的命，却让他失明了。The kid was saved by the operation that cost him his sight.3. at all costs/at any cost 不惜任何代价，无论如何他宣称无论如何都要阻止那场战争。He announced he will stop that war at all costs.他命令军队要不惜代价夺回营地。He ordered his troops to recapture the camp at any cost.