图1：软件过程成熟度的五个等级。
我们的英语课程共分五个等级，从基础到高级不等。
Our English programmes are offered in 5 levels from elementary to advanced.
描述最终评价结果的五个等级水平可以提供更多有价值的信息。
The five rating levels that describe the final evaluation results can provide more valuable information.
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