If one part of a system decides to make a trade based on the current price and the actual trade gets delayed for whatever reason even a small change can result in a significant loss of money.
如果系统中的某个部分决定以当前的价格进行一笔交易，但是由于某些原因这笔交易被延迟了，那么价格的一点微小变化也许都会给用户带来巨大的损失。
That’s a pretty low price for a computer, even one based on a free, open-source operating system.
这一价格对电脑来说相当之低，甚至是采用免费开源操作系统的电脑也是如此。
The lesson fees are much lower than the current market price for other one-to-one language learning services and the system is much more effective than language CDs.
最人性化收费机制，按照学习时间即时计费。 课程费用远远低于目前市场上的一对一语言服务收费，而且更加有效。
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