Rating a feature should use a 4-level scheme: "Not started or at risk", "in progress", "on track to succeed, low risk", and "Done."

我们可以使用四级的状态来评定特性的进度：“未启动或风险评估中”，“进行中”，“即将成功，低风险”，以及“完成。”

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The fault-tolerant problem for INS/GPS integrated system is studied, and a two-level scheme fcsr failure detection and isolation is proposed.

本文研究了INS/GPS组合导航系统的容错问题，并提出了一个两级故障检测及分离方案。

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This algorithm uses the dictionary sequence to enumerate the A level scheme, and designs one method to enumerate B level scheme, which effectively solves the problem.

该算法采用了字典序组合法对A级方案进行遍历，设计了一种遍历方法对B级方案进行遍历，有效地解决了方案遍历问题。

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The funding - for adopting environmentally friendly methods - will be available thorugh the Common Agricultural Policy's new Entry Level Scheme.

BBC: The grey partidge is nearly extinct in parts of England

This meant that the overall level of pension scheme membership has dropped below the 50% mark for the first time since modern records started in 1997.

BBC: Pension provision still falling, says ONS

Exam boards produced "very precise" guidelines setting out what pupils must do for each level in the marking scheme.

BBC: GCSE English: How is it marked?