Pricing is similar to other Amazon cloud services in that it is based on storage amounts and machinetime consumed.
价格则和其他Amazon云服务类似，都是根据存储空间和机器时间的使用量来计算。
2
An accounting card is the first card of every job and is used for recording the machinetime to process the job.
一个记账卡是每个作业的第一个卡片，它被用来记录处理本作业的机器时间。
3
One line of thinking is that, since the build verification tests are all automated, what's the harm in running all of them every night — it's just machinetime, right?