The first is that the extra cost to a country of not standing by its banks can be surprisingly small.

第一大是对于一个不由其银行支持的国家来说，额外的成本是相当之小的。

youdao

Installing Web services front ends represent an extra development cost whose payoff is not immediate.

安装Web服务前端代表了一种额外的开发成本，其回报并不能立即产生。

youdao

It is common for 3-year-olds in Beijing kindergartens to learn English, and not unusual for them to take after-school classes in music, tae kwon do, or chess, which cost extra.

在北京的幼儿园，3岁的孩子就开始学习英语，在放学后参加音乐、跆拳道、棋类的学习班非常普遍，而这些班属于额外收费。

youdao

She said using the helicopter would not cost customers any extra money, but due to the limited capacity - about half a tonne of post in each trip - special delivery would be subject to availability.

BBC: Guernsey Post helicopter at Guernsey Airport

Ultimately, though, there's only so much you can do to fine-tune a 20-year-old design, and one that was originally envisaged - let's not forget - to launch astronauts, with all the extra assurance and cost that human spaceflight entails.

BBC: Ariane rocket aims to pick up the pace

So much so that the extra cost of the gateways that will be needed between the two telecommunications worlds do not bring the costs up to the same level as the costs for switched circuit telephone networks.

CNN: IP telephony is the "in" thing these days, but should it be?