First of all, note that SimpleDB allows multiple values for a single key.
首先，注意SimpleDB允许对单一键使用多个值。
You can accumulate a single value over time or multiple values over time.
可以按时间累加得到单个值或多个值。
How can I deal with multiple values in some attribute?
我如何能解决一些属性的多个值？
Multiple values were specified for an attribute that can have only one value.
为只能有一个值的属性指定了多个值。
Multiple values were specified for an attribute that can have only one value.
为只能有一个值的属性指定了多个值。
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