Some of these representation systems are very complex (such as compressed image files), while others are rather simple.

在这些表示系统(用于将信息转换成数字的系统)当中，有一些是很复杂的(比如图片文件的表示)，而有一些却是十分简单的。

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Proportional-representation systems are meant to correct these defects.

ECONOMIST: Blair��s genie

She said ministers were building on the strengths of previous systems of representation while working to mitigate problems associated with them.

BBC: Health and Social Care Bill part three

New systems of proportional representation have been introduced for elections in Scotland and Wales, and for the European Parliament, in place of Britain's time-honoured system of first-past-the-post.

ECONOMIST: Britain