But a disaster on this scale is unusual: occasional outages are more common.
但是这么大规模的灾难很少见：偶尔暂停服务倒是更为常见。
Helping on a larger scale, however, is not as common.
但是在大的事件上帮助就不那么常见了。
A common problem as you try to scale applications is write contention in the database.
在您尝试伸缩应用程序时，常遇见的问题是数据库中的写入争用。
But biofuel technology began on a small scale, and grain surpluses were common.
但是生物燃料技术始于一个很小的规模，而那时谷物过剩却很常见。
Used a common method:static scale inhibition method.
采用常用的分析方法：静态阻垢法。
Used a common method:static scale inhibition method.
采用常用的分析方法：静态阻垢法。
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